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