| Extension | File Description |
| .YKF | Uncommon Files |
| .YKG | Uncommon Files |
| .YKH | Uncommon Files |
| .YKI | Uncommon Files |
| .YKJ | Uncommon Files |
| .YKK | Uncommon Files |
| .YKL | Uncommon Files |
| .YKM | Uncommon Files |
| .YKN | Uncommon Files |
| .YKO | Uncommon Files |
| .YKP | Uncommon Files |
| .YKQ | Uncommon Files |
| .YKR | Uncommon Files |
| .YKS | Uncommon Files |
| .YKT | Uncommon Files |
| .YKU | Uncommon Files |
| .YKV | Uncommon Files |
| .YKW | Uncommon Files |
| .YKX | Uncommon Files |
| .YKY | Uncommon Files |
| .YKZ | Uncommon Files |
| .YL0 | Uncommon Files |
| .YL1 | Uncommon Files |
| .YL2 | Uncommon Files |
| .YL3 | Uncommon Files |
| .YL4 | Uncommon Files |
| .YL5 | Uncommon Files |
| .YL6 | Uncommon Files |
| .YL7 | Uncommon Files |
| .YL8 | Uncommon Files |
| .YL9 | Uncommon Files |
| .YLA | Uncommon Files |
| .YLB | Uncommon Files |
| .YLC | Uncommon Files |
| .YLD | Uncommon Files |
| .YLE | Uncommon Files |
| .YLF | Uncommon Files |
| .YLG | Uncommon Files |
| .YLH | Uncommon Files |
| .YLI | Uncommon Files |
| .YLJ | Uncommon Files |
| .YLK | Uncommon Files |
| .YLL | Uncommon Files |
| .YLM | Uncommon Files |
| .YLN | Uncommon Files |
| .YLO | Uncommon Files |
| .YLP | Uncommon Files |
| .YLQ | Uncommon Files |
| .YLR | Uncommon Files |
| .YLS | Uncommon Files |
| .YLT | Uncommon Files |
| .YLU | Uncommon Files |
| .YLV | Uncommon Files |
| .YLW | Uncommon Files |
| .YLX | Uncommon Files |
| .YLY | Uncommon Files |
| .YLZ | Uncommon Files |
| .YM | Audio Files |
| .YM0 | Uncommon Files |
| .YM1 | Uncommon Files |
| .YM2 | Uncommon Files |
| .YM3 | Uncommon Files |
| .YM4 | Uncommon Files |
| .YM5 | Uncommon Files |
| .YM6 | Uncommon Files |
| .YM7 | Uncommon Files |
| .YM8 | Uncommon Files |
| .YM9 | Uncommon Files |
| .YMA | Uncommon Files |
| .YMACRO | Uncommon Files |
| .YMAP | Uncommon Files |
| .YMB | Uncommon Files |
| .YMC | Uncommon Files |
| .YMD | Uncommon Files |
| .YME | Uncommon Files |
| Extension | File Description |
| .YMF | Uncommon Files |
| .YMG | Misc Files |
| .YMH | Uncommon Files |
| .YMI | Uncommon Files |
| .YMJ | Uncommon Files |
| .YMK | Uncommon Files |
| .YML | Text Files |
| .YMM | Uncommon Files |
| .YMN | Uncommon Files |
| .YMO | Uncommon Files |
| .YMP | Developer Files |
| .YMQ | Uncommon Files |
| .YMR | Uncommon Files |
| .YMS | Uncommon Files |
| .YMT | Uncommon Files |
| .YMU | Uncommon Files |
| .YMV | Uncommon Files |
| .YMW | Uncommon Files |
| .YMX | Uncommon Files |
| .YMY | Uncommon Files |
| .YMZ | Uncommon Files |
| .YN | Uncommon Files |
| .YN0 | Uncommon Files |
| .YN1 | Uncommon Files |
| .YN2 | Uncommon Files |
| .YN3 | Uncommon Files |
| .YN4 | Uncommon Files |
| .YN5 | Uncommon Files |
| .YN6 | Uncommon Files |
| .YN7 | Uncommon Files |
| .YN8 | Uncommon Files |
| .YN9 | Uncommon Files |
| .YNA | Uncommon Files |
| .YNB | Uncommon Files |
| .YNC | Encoded Files |
| .YND | Uncommon Files |
| .YNE | Uncommon Files |
| .YNF | Uncommon Files |
| .YNG | Uncommon Files |
| .YNH | Uncommon Files |
| .YNI | Uncommon Files |
| .YNJ | Uncommon Files |
| .YNK | Uncommon Files |
| .YNL | Uncommon Files |
| .YNM | Uncommon Files |
| .YNN | Uncommon Files |
| .YNO | Uncommon Files |
| .YNP | Uncommon Files |
| .YNQ | Uncommon Files |
| .YNR | Uncommon Files |
| .YNS | Uncommon Files |
| .YNT | Uncommon Files |
| .YNU | Uncommon Files |
| .YNV | Uncommon Files |
| .YNW | Uncommon Files |
| .YNX | Uncommon Files |
| .YNY | Uncommon Files |
| .YNZ | Uncommon Files |
| .YO0 | Uncommon Files |
| .YO1 | Uncommon Files |
| .YO2 | Uncommon Files |
| .YO3 | Uncommon Files |
| .YO4 | Uncommon Files |
| .YO5 | Uncommon Files |
| .YO6 | Uncommon Files |
| .YO7 | Uncommon Files |
| .YO8 | Uncommon Files |
| .YO9 | Uncommon Files |
| .YOA | Uncommon Files |
| .YOB | Uncommon Files |
| .YOC | Uncommon Files |
| .YOD | Uncommon Files |
| .YOE | Uncommon Files |
| .YOF | Uncommon Files |
| .YOG | Uncommon Files |
