| PBZ | Ansan Greeners | LEP | Asan United | KWC | Bucheon FC 1995 | BAW | Busan I'Park | | JWF | Busan TC | VDQ | Byeoksan Players | JVT | Changwon City | SMU | Cheonan City | | JVU | Cheongju City | UNZ | Cheongju Showking | TDX | Cheongsol | ELA | Chonbuk Motors | | SMT | Chuncheon Citizen | LEN | Chungbuk Cheongju | JVV | Chungju Hummel | KWD | Chungnam Asan | | JM | Chunnam Dragons | VCL | Daegu FC B | ELB | Daegu FC | UOF | Daejeon Seobu | | DWE | Daejon Citizen | JWD | Daejon KHNP | JWC | Daejon Korail | TDM | Dangjin Citizen | | JVY | FC Anyang | TTI | FC Avenir | SPO | FC Chungju | JWB | FC Mokpo | | SQL | FC Namdong | EUN | FC Seoul | PGF | FC Uijeongbu | JVW | Gangneung City | | GYD | Gangwon | TTH | Geoje Citizen | BVX | Gimcheon Sangmu | JVX | Gimhae FC | | TDZ | Gimhae Jaemics | LEK | Gimpo FC | SPN | Goyang Citizen | UNV | Goyang Happiness | | JVS | Goyang Hi | TSX | Goyang KH | ISX | Gwangju FC | LEL | Gyeongju Citizen | | LEO | Gyeongju KHNP | FFZ | Gyeongnam | LEX | Hwaseong | SPK | Hyochang | | SMS | Icheon Citizen | UOC | Incheon Ganseok | EMS | Incheon United | DXH | Jeju United | | SNA | Jeonju Citizen | VEB | Jeonju OFC | SMX | Jinju Citizen | DWF | Korea University | | UOE | Mokpo Gatdangdae | VDN | Namyangju | LEV | Nowon United | SGQ | Paju Citizen | | LEW | Pocheon Citizen | CBN | Pohang Steelers | BGL | Posco Atoms | TTM | Pyeongchang | | SMY | Pyeongtaek | BVJ | Royal Korea | SPL | SMC Engineering | UOA | Sejong Vanesse | | UOB | Sejong Wookil | UOD | Seogu Hwajeong | VDZ | Seongdang | EUI | Seongnam Ilhwa | | NNS | Seoul E-Land | LEM | Seoul FC Martyrs | SQU | Seoul Jungnang | VDO | Shinan | | RVX | Siheung Citizen | SPM | Songwol | BTT | Suwon Bluewings | JVZ | Suwon FC | | SMV | Ulsan Citizen | JWE | Ulsan Dolphins | BGJ | Ulsan HD | TDL | Yangcheon TNT | | SMR | Yangju Citizen | VDP | Yangju Deokkye | SMZ | Yangpyeong | VEA | Yangsan Eogok | | TDN | Yeoju FC | JWA | Yongin City |
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