| Name | Description | Year | Manufacturer | Rom | Clone | Sample |
| quartet | Quartet (Rev A, 8751 315-5194) | 1986 | Sega | | | |
| quartet2 | Quartet 2 (8751 317-0010) | 1986 | Sega | quartet | quartet | |
| quartet2a | Quartet 2 (unprotected) | 1986 | Sega | quartet | quartet | |
| quarteta | Quartet (8751 315-5194) | 1986 | Sega | quartet | quartet | |
| quarth | Quarth (Japan) | 1989 | Konami | blockhl | blockhl | |
| quasar | Quasar (set 1) | 1980 | Zaccaria / Zelco | | | |
| quasara | Quasar (set 2) | 1980 | Zaccaria / Zelco | quasar | quasar | |
| queen | Queen? | 2002? | STG | | | |
| queenbee | Queen Bee (Ver. 114) | 2001 | Subsino (American Alpha license) | | | |
| queenbeeb | Queen Bee (Brazil, Ver. 202) | 2001 | Subsino | queenbee | queenbee | |
| queenbeei | Queen Bee (Israel, Ver. 100) | 2001 | Subsino | queenbee | queenbee | |
| queenbeesa | Queen Bee (SA-101-HARD) | 2001 | Subsino | queenbee | queenbee | |
| queenbn | Nuwang Feng New / Queen Bee New (China, Ver. 1.10) | 2002 | Subsino | | | |
| queenotg | Queen of the Games | 200? | <unknown> | | | |
| questarm | Questar/M | 1982 | Honeywell Bull | micral | micral | |
| quester | Quester (Japan) | 1987 | Namco | | | |
| questers | Quester Special Edition (Japan) | 1987 | Namco | quester | quester | |
| questofd | Quest of D (CDV-10005C) | 2004 | Sega | chihiro | | |
| quickjac | Quick Jack | 1993 | ADP | | | |
| quickload | Quickload | | | | | |
| quickp5 | Quick Pick 5 | 1991 | Konami | | | |
| quickshts | Quick Shots (ver 1.0, checksum AD0C) | 1994 | Zero / Gaelco | targeth | targeth | |
| quicksil | Quicksilver | 1980 | Stern | | | genpin |
| quingo | Quingo Export (5.00) | 1999 | Impera | | | |
| quintond | Quintoon (UK, Game Card 95-751-206, Datapak) | 1993 | BFM | quintoon | quintoon | |
| quintono | Quintoon (UK, Game Card 95-750-203) | 1993 | BFM | quintoon | quintoon | |
| quintoon | Quintoon (UK, Game Card 95-750-206) | 1993 | BFM | | | |
| quiz | Quiz (Revision 2) | 1986 | Elettronolo | | | |
| quiz18k | Miyasu Nonki no Quiz 18-Kin | 1992 | EIM | | | |
| quiz211 | Quiz (Revision 2.11) | 1991 | Elettronolo | | | |
| quiz211a | Quiz (Revision 2.11, alt questions) | 1986 | Elettronolo | quiz211 | quiz211 | |
| quiz365 | Quiz 365 (Japan) | 1994 | Nakanihon | | | |
| quiz365t | Quiz 365 (Hong Kong & Taiwan) | 1994 | Nakanihon / Taito | quiz365 | quiz365 | |
| quizard | Quizard (v1.8, German, i8751 DE 11 D3) | 1995 | TAB Austria | cdibios | | |
| quizard_10 | Quizard (v1.0, German, i8751 DE 11 D3) | 1995 | TAB Austria | quizard | quizard | |
| quizard_12 | Quizard (v1.2, German, i8751 DE 11 D3) | 1995 | TAB Austria | quizard | quizard | |
| quizard_17 | Quizard (v1.7, German, i8751 DE 11 D3) | 1995 | TAB Austria | quizard | quizard | |
| quizard2 | Quizard 2 (v2.3, German, i8751 DN 122 D3) | 1995 | TAB Austria | cdibios | | |
| quizard2_22 | Quizard 2 (v2.2, German, i8751 DN 122 D3) | 1995 | TAB Austria | quizard2 | quizard2 | |
| quizard3 | Quizard 3 (v3.4, German, i8751 DE 132 D3) | 1995 | TAB Austria | cdibios | | |
| quizard3_32 | Quizard 3 (v3.2, German, i8751 DE 132 D3) | 1996 | TAB Austria | quizard3 | quizard3 | |
| quizard3a | Quizard 3 (v3.4, German, i8751 DE 132 A1) | 1995 | TAB Austria | quizard3 | quizard3 | |
| quizard4 | Quizard 4 Rainbow (v4.2, German, i8751 DE 142 D3) | 1998 | TAB Austria | cdibios | | |
| quizard4_40 | Quizard 4 Rainbow (v4.0, German, i8751 DE 142 D3) | 1997 | TAB Austria | quizard4 | quizard4 | |
| quizard4_41 | Quizard 4 Rainbow (v4.1, German, i8751 DE 142 D3) | 1998 | TAB Austria | quizard4 | quizard4 | |
| quizard4cz | Quizard 4 Rainbow (v4.2, Czech, i8751 TS142 CZ1) | 1998 | TAB Austria | quizard4 | quizard4 | |
| quizardff | Quizard Fun and Fascination (French Edition V1 - 01/96) | 1996 | TAB Austria | cdibios | | |
| quizardi | Quizard (v1.8, Italian, i8751 IT 11 I2) | 1995 | TAB Austria | quizard | quizard | |
| quizardi_12 | Quizard (v1.2, Italian, i8751 IT 11 I2) | 1995 | TAB Austria | quizard | quizard | |
| quizardi_17 | Quizard (v1.7, Italian, i8751 IT 11 I2) | 1995 | TAB Austria | quizard | quizard | |
| quizchq | Quiz Channel Question (Japan, Ver 1.00) | 1993 | Nakanihon | | | |
| quizchqk | Quiz Channel Question (Korea, Ver 1.10) | 1993 | KM Korea Co, Ltd (official license) | quizchq | quizchq | |
| quizchql | Quiz Channel Question (Taiwan?, Ver 1.23) | 1993 | Nakanihon (Laxan license) | quizchq | quizchq | |
| quizdai2 | Quiz Meitantei Neo & Geo - Quiz Daisousa Sen part 2 (NGM-042 ~ NGH-042) | 1992 | SNK | neogeo | | |
| quizdais | Quiz Daisousa Sen - The Last Count Down (NGM-023 ~ NGH-023) | 1991 | SNK | neogeo | | |
| quizdaisk | Quiz Salibtamjeong - The Last Count Down (Korean localized Quiz Daisousa Sen) | 1995 | SNK / Viccom | quizdais | quizdais | |
| quizdna | Quiz DNA no Hanran (Japan) | 1992 | Face | | | |
| quizf1 | Quiz F1 1-2 Finish (Japan) | 1992 | Irem | | | |
| quizhq | Quiz H.Q. (Japan) | 1990 | Taito Corporation | | | |
| quizhuhu | Moriguchi Hiroko no Quiz de Hyuu!Hyuu! (Ver 2.2J 1995/05/25) | 1995 | Taito Corporation | | | |
| quizkof | Quiz King of Fighters (SAM-080 ~ SAH-080) | 1995 | Saurus (SNK license) | neogeo | | |
| quizkofk | Quiz King of Fighters (Korea) | 1996 | Saurus / Viccom (SNK license) | quizkof | quizkof | |
| quizmeku | Quiz Mekurumeku Story (Japan, ROM Based) | 1992 | Sega | | | |
| quizmoon | Quiz Bishoujo Senshi Sailor Moon - Chiryoku Tairyoku Toki no Un | 1997 | Banpresto | | | |
| quizmstr | Quizmaster (German) | 1985 | Löwen Spielautomaten | | | |
| quizo | Quiz Olympic (set 1) | 1985 | Seoul Coin Corp. | | | |
| quizoa | Quiz Olympic (set 2) | 1985 | Seoul Coin Corp. | quizo | quizo | |
| quizpani | Quiz Panicuru Fantasy | 1993 | NMK | | | |
| quizpanir | Medal Quiz Panicuru Roulette | 1994 | NMK | | | |
| quizpun | Quiz Punch | 1988 | Space Computer | | | |
| quizpun2 | Quiz Punch II | 1989 | Space Computer | | | |
| quizqgd | Quiz Keitai Q mode (GDL-0017) | 2002 | Amedio (Taito license) | naomigd | | |
| quizshow | Quiz Show | 1976 | Atari (Kee Games) | | | |
| quiztou | Nettou! Gekitou! Quiztou!! (Japan) | 1993 | Namco | | | |
| quiztvqq | Quiz TV Gassyuukoku Q&Q (Japan) | 1992 | Dynax | | | |
| quizvadr | Quizvaders (39-360-078) | 1991 | BFM | | | |
| quizvid | Video Quiz | 1986 | bootleg | | | |
| quizwizc | Quiz Wiz Challenger | 1981 | Coleco | | | |
| quorum | Quorum | 19?? | <unknown> | spec128 | spec128 | |
| quorum48 | Kvorum 48K | 1993 | <unknown> | spectrum | spectrum | |
| qvt102 | QVT-102 | 1983 | Qume | | | |
| qvt102a | QVT-102A | 1983 | Qume | qvt102 | qvt102 | |
| qvt103 | QVT-103 | 1983 | Qume | | | |
| qvt190 | QVT-190 | 1987 | Qume | | | |
| qvt201 | QVT-201 (Rev. T201VE) | 1986 | Qume | | | |
| qvt70 | QVT-70 | 1992 | Qume | | | |
| qvt82 | QVT-82 | 1993 | Qume | | | |
| qwak | Qwak (prototype) | 1982 | Atari | | | |
| qwakttl | Qwak!/Quack | 1974 | Atari | | | |
| qx10 | QX-10 | 1983 | Epson | | | |
| qx10_keyboard_ascii | Epson QX-10 Keyboard (ASCII) | | | | | |
| qx10_keyboard_hasci | Epson QX-10 Keyboard (HASCI) | | | | | |
| qy70 | QY70 Music Sequencer | 1997 | Yamaha | | | |
| qyjdzjp | Que You Ji - Dian Zi Ji Pan Jiaqiang Ban (v201) | 1997 | bootleg (Hom Inn) | mjelctrn | mjelctrn | |
| qzchikyu | Quiz Chikyu Bouei Gun (Japan) | 1991 | Taito Corporation | | | |
| qzkklgy2 | Quiz Kokology 2 | 1993 | Tecmo | | | |
| qzkklogy | Quiz Kokology | 1992 | Tecmo | | | |
| qzquest | Quiz Quest - Hime to Yuusha no Monogatari (Japan) | 1991 | Taito Corporation | | | |
| qzshowby | Quiz Sekai wa SHOW by shobai (Japan) | 1993 | Taito Corporation | | | |
| r_alaska | Alaska | 1978 | Interflip | recel | | genpin |
| r_antar | Antar (Recel) | 1980 | Recel | recel | | genpin |
| r_blackm4 | Black Magic 4 | 1980 | Recel | recel | | genpin |
| r_blackmag | Black Magic | 1980 | Recel | recel | | genpin |
| r_cavalier | Cavalier | 1979 | Recel | recel | | genpin |
| r_crzyrace | Crazy Race | 1978 | Recel | recel | | genpin |
| r_fairfght | Fair Fight | 1978 | Recel | recel | | genpin |
| r_flipper | The Flipper Game | 1980 | Recel | recel | | genpin |
| r_hotcold | Hot & Cold | 1978 | Inder | recel | | genpin |
| r_mrdoom | Mr. Doom | 1979 | Recel | recel | | genpin |
| r_mrevil | Mr. Evil | 1978 | Recel | recel | | genpin |
| r_pokrplus | Poker Plus | 1978 | Recel | recel | | genpin |
| r_quijote | Don Quijote | 1979 | Recel | recel | | genpin |
| r_screech | Screech | 1978 | Inder | recel | | genpin |
| r_spcgame7 | Space Game (Bingo 6+1) | 1979 | Recel | recel | | genpin |
| r_swash | SwashBuckler | 1979 | Recel | recel | | genpin |
| r_torneo | Torneo | 1978 | Recel | recel | | genpin |
| r100 | R-100 Digital Drum Machine | 1987 | Kawai Musical Instrument Manufacturing | | | |
| r10696 | Rockwell 10696 GPIO | | | | | |
| r10788 | Rockwell 10788 KDC | | | | | |
| r2000 | MIPS R2000 | | | | | |
| r2000a | MIPS R2000A | | | | | |
| r2dtank | R2D Tank | 1980 | Sigma Enterprises Inc. | | | |
| r2dx_v33 | Raiden II New / Raiden DX (newer V33 PCB) (Raiden DX EEPROM) | 1996 | Seibu Kaihatsu | | | |
| r2dx_v33_r2 | Raiden II New / Raiden DX (newer V33 PCB) (Raiden II EEPROM) | 1996 | Seibu Kaihatsu | r2dx_v33 | r2dx_v33 | |
| r3000 | MIPS R3000 | | | | | |
| r3000a | MIPS R3000A | | | | | |
| r3041 | IDT R3041 | | | | | |
| r3051 | IDT R3051 | | | | | |
| r3052 | IDT R3052 | | | | | |
| r3052e | IDT R3052E | | | | | |
| r3071 | IDT R3071 | | | | | |
| r3081 | IDT R3081 | | | | | |
| r4000 | MIPS R4000 | | | | | |
| r4000be | MIPS R4000 (big) | | | | | |
| r4000le | MIPS R4000 (little) | | | | | |
| r4400 | MIPS R4400 | | | | | |
| r4400be | MIPS R4400 (big) | | | | | |
| r4400le | MIPS R4400 (little) | | | | | |
| r4600 | QED R4600 | | | | | |
| r4600be | MIPS R4600 (big) | | | | | |
| r4600le | MIPS R4600 (little) | | | | | |
| r4650be | MIPS IDT R4650 (big) | | | | | |
| r4650le | MIPS IDT R4650 (little) | | | | | |
| r4700be | MIPS R4700 (big) | | | | | |
| r4700le | MIPS R4700 (little) | | | | | |
| r5000 | MIPS R5000 | | | | | |
| r5000be | MIPS R5000 (big) | | | | | |
| r5000le | MIPS R5000 (little) | | | | | |
| r5900be | Emotion Engine Core (big) | | | | | |
| r5900le | Emotion Engine Core (little) | | | | | |
| r6545_1 | Rockwell R6545-1 CRTC | | | | | |
| r65c02 | Rockwell R65C02 | | | | | |
| r65c102 | Rockwell R65C102 | | | | | |
| r65c112 | Rockwell R65C112 | | | | | |
| r65c19 | Rockwell R65C19 MCU | | | | | |
| r65c22 | Rockwell R65C22 VIA | | | | | |
| r65c52 | Rockwell 65C52 DACIA | | | | | |
| r65nc22 | Rockwell R65NC22 VIA | | | | | |
| r8 | R-8 Human Rhythm Composer (v2.02) | 1989 | Roland | | | |
| r800 | ASCII R800 | | | | | |
| r8m | R-8M Total Percussion Sound Module (v1.04) | 1990 | Roland | r8 | r8 | |
| r8mk2 | R-8 Mk II Human Rhythm Composer (v1.0.3) | 1992 | Roland | | | |
| r9751 | ROLM 9751 Model 10 | 1988 | ROLM Systems, Inc. | | | |
| ra145 | Retro Arcade 16 Bits Classic Edition Mini TV Game Console - 145 Classic Games - TV Arcade Plug and Play (Mega Drive bootlegs) | 2018 | <unknown> | | | |
| ra17xx | Rockwell A17xx | | | | | |
| ra30 | RA-30 Realtime Arranger | 1995 | Roland | | | |
| raaspec | Spectrum I+ | 1984 | Roy Abel & Associates | | | |
| rab_103s | Adventures of Rocky and Bullwinkle and Friends (USA 1.03, display S1.03) | 1993 | Data East | rab_320 | rab_320 | genpin |
| rab_130 | Adventures of Rocky and Bullwinkle and Friends (USA 1.30, display A1.30) | 1993 | Data East | rab_320 | rab_320 | genpin |
| rab_320 | Adventures of Rocky and Bullwinkle and Friends (USA 3.20, display A3.00) | 1993 | Data East | | | genpin |
| rabbit | Rabbit (Asia 3/6) | 1997 | Aorn / Electronic Arts | | | |
| rabbita | Rabbit (Asia 1/28?) | 1996 | Aorn / Electronic Arts | rabbit | rabbit | |
| rabbitj | Rabbit (Japan 3/6?) | 1997 | Aorn / Electronic Arts | rabbit | rabbit | |
| rabbitjt | Rabbit (Japan 1/28, location test) | 1996 | Aorn / Electronic Arts | rabbit | rabbit | |
| rabbitpk | Rabbit Poker (Arizona Poker v1.1?) | 1990 | bootleg | ampoker2 | ampoker2 | |
| rabiolep | Rabio Lepus (Japan) | 1987 | V-System Co. | | | |
| raccoon | Raccoon World | 1998 | Eolith | | | |
| racechl8 | Racing Challenge - 8 Games In 1 | 2005 | Play Vision / Taikee | | | |
| racedriv | Race Drivin' (cockpit, rev 5) | 1990 | Atari Games | | | |
| racedriv_board | Race Drivin' Board Device | | | | | |
| racedriv1 | Race Drivin' (cockpit, rev 1) | 1990 | Atari Games | racedriv | racedriv | |
| racedriv2 | Race Drivin' (cockpit, rev 2) | 1990 | Atari Games | racedriv | racedriv | |
| racedriv3 | Race Drivin' (cockpit, rev 3) | 1990 | Atari Games | racedriv | racedriv | |
| racedriv4 | Race Drivin' (cockpit, rev 4) | 1990 | Atari Games | racedriv | racedriv | |
| racedrivb | Race Drivin' (cockpit, British, rev 5) | 1990 | Atari Games | racedriv | racedriv | |
| racedrivb1 | Race Drivin' (cockpit, British, rev 1) | 1990 | Atari Games | racedriv | racedriv | |
| racedrivb1_board | Race Drivin' B1 Board Device | | | | | |
| racedrivb4 | Race Drivin' (cockpit, British, rev 4) | 1990 | Atari Games | racedriv | racedriv | |
| racedrivc | Race Drivin' (compact, rev 5) | 1990 | Atari Games | racedriv | racedriv | |
| racedrivc_board | Race Drivin' C Board Device | | | | | |
| racedrivc_panorama_side_board | Race Drivin' C Panorama Board Device | | | | | |
| racedrivc1 | Race Drivin' (compact, rev 1) | 1990 | Atari Games | racedriv | racedriv | |
| racedrivc1_board | Race Drivin' C1 Board Device | | | | | |
| racedrivc2 | Race Drivin' (compact, rev 2) | 1990 | Atari Games | racedriv | racedriv | |
| racedrivc4 | Race Drivin' (compact, rev 4) | 1990 | Atari Games | racedriv | racedriv | |
| racedrivcb | Race Drivin' (compact, British, rev 5) | 1990 | Atari Games | racedriv | racedriv | |
| racedrivcb4 | Race Drivin' (compact, British, rev 4) | 1990 | Atari Games | racedriv | racedriv | |
| racedrivcg | Race Drivin' (compact, German, rev 5) | 1990 | Atari Games | racedriv | racedriv | |
| racedrivcg4 | Race Drivin' (compact, German, rev 4) | 1990 | Atari Games | racedriv | racedriv | |
| racedrivcp | Race Drivin' (compact, prototype) | 1990 | Atari Games | racedriv | racedriv | |
| racedrivg | Race Drivin' (cockpit, German, rev 5) | 1990 | Atari Games | racedriv | racedriv | |
| racedrivg1 | Race Drivin' (cockpit, German, rev 2) | 1990 | Atari Games | racedriv | racedriv | |
| racedrivg4 | Race Drivin' (cockpit, German, rev 4) | 1990 | Atari Games | racedriv | racedriv | |
| racedrivpan | Race Drivin' Panorama (prototype, rev 2.1) | 1990 | Atari Games | racedriv | racedriv | |
| raceon | Race On! (World, RO2 Ver. A) | 1998 | Namco | | | |
| raceonj | Race On! (Japan, RO1 Ver. B) | 1998 | Namco | raceon | raceon | |
| racetime | Race Time | 1980 | Bandai | | | |
| rachero | Racing Hero (FD1094 317-0144) | 1989 | Sega | | | |
| racherod | Racing Hero (bootleg of FD1094 317-0144 set) | 1989 | bootleg | rachero | rachero | |
| racinfrc | Racin' Force (ver EAC) | 1994 | Konami | konamigx | | |
| racinfrcu | Racin' Force (ver UAB) | 1994 | Konami | racinfrc | racinfrc | |
| racingb | Racing Beat (World) | 1991 | Taito Corporation Japan | | | |
| racingbj | Racing Beat (Japan) | 1991 | Taito Corporation | racingb | racingb | |
| racingj | Racing Jam (GQ676UAC) | 1998 | Konami | | | |
| racingj2 | Racing Jam: Chapter II (GQ888UAA) | 1998 | Konami | | | |
| racingj2a | Racing Jam: Chapter II (GQ888AAA) | 1998 | Konami | racingj2 | racingj2 | |
| racingj2e | Racing Jam: Chapter II (GQ888EAA) | 1998 | Konami | racingj2 | racingj2 | |
| racingj2j | Racing Jam: Chapter II (GQ888JAA) | 1998 | Konami | racingj2 | racingj2 | |
| racingj2m | Racing Jam: Chapter II (GM888UAA) | 1998 | Konami | racingj2 | racingj2 | |
| racingj2ma | Racing Jam: Chapter II (GM888AAA) | 1998 | Konami | racingj2 | racingj2 | |
| racingj2me | Racing Jam: Chapter II (GM888EAA) | 1998 | Konami | racingj2 | racingj2 | |
| racingj2mj | Racing Jam: Chapter II (GM888JAA) | 1998 | Konami | racingj2 | racingj2 | |
| racingj2n | Racing Jam: Chapter II (GN888UAA) | 1998 | Konami | racingj2 | racingj2 | |
| racingj2na | Racing Jam: Chapter II (GN888AAA) | 1998 | Konami | racingj2 | racingj2 | |
| racingj2ne | Racing Jam: Chapter II (GN888EAA) | 1998 | Konami | racingj2 | racingj2 | |
| racingj2nj | Racing Jam: Chapter II (GN888JAA) | 1998 | Konami | racingj2 | racingj2 | |
| racingja | Racing Jam (GQ676AAC) | 1998 | Konami | racingj | racingj | |
| racingje | Racing Jam (GQ676EAC) | 1998 | Konami | racingj | racingj | |
| racingjj | Racing Jam (GQ676JAC) | 1998 | Konami | racingj | racingj | |
| racingjm | Racing Jam (GM676UAC) | 1998 | Konami | racingj | racingj | |
| racingjma | Racing Jam (GM676AAC) | 1998 | Konami | racingj | racingj | |
| racingjme | Racing Jam (GM676EAC) | 1998 | Konami | racingj | racingj | |
| racingjmj | Racing Jam (GM676JAC) | 1998 | Konami | racingj | racingj | |
| racingjn | Racing Jam (GN676UAC) | 1998 | Konami | racingj | racingj | |
| racingjna | Racing Jam (GN676AAC) | 1998 | Konami | racingj | racingj | |
| racingjne | Racing Jam (GN676EAC) | 1998 | Konami | racingj | racingj | |
| racingjnj | Racing Jam (GN676JAC) | 1998 | Konami | racingj | racingj | |
| racjamdx | Racing Jam DX | 1997 | Konami | | | |
| rackempp | Rack 'em Up! (Pinball) | 1983 | Gottlieb | | | genpin |
| rackemup | Rack 'em Up (version L) | 1987 | Konami | | | |
| racknrol | Rack + Roll | 1986 | Senko Industries (Status license from Shinkai Inc.) | | | |
| rad_bask | Play TV Basketball | 2005 | Radica / FarSight Studios | | | |
| rad_baskp | Connectv Basketball | 2005 | Radica / FarSight Studios | rad_bask | rad_bask | |
| rad_bass | Play TV Bass Fishin' (NTSC) | 2001 | Radica / SSD Company LTD | | | |
| rad_bassp | ConnecTV Bass Fishin' (PAL) | 2001 | Radica / SSD Company LTD | rad_bass | rad_bass | |
| rad_bb | Play TV Baseball (NTSC) | 2000 | Radica / SSD Company LTD | | | |
| rad_bb2 | Play TV Baseball 2 (NTSC) | 2002 | Radica / SSD Company LTD | | | |
| rad_bb3 | Play TV Baseball 3 | 2005 | Radica / FarSight Studios | | | |
| rad_bb3p | Connectv Baseball 3 | 2005 | Radica / FarSight Studios | rad_bb3 | rad_bb3 | |
| rad_bdp | Barbie Dance Party | 2002 | Radica / Mattel / SSD Company LTD | | | |