| Extension | File Description |
| .YC9 | Uncommon Files |
| .YCA | Uncommon Files |
| .YCB | Uncommon Files |
| .YCC | Uncommon Files |
| .YCD | Uncommon Files |
| .YCE | Uncommon Files |
| .YCF | Uncommon Files |
| .YCG | Uncommon Files |
| .YCH | Uncommon Files |
| .YCI | Uncommon Files |
| .YCJ | Uncommon Files |
| .YCK | Uncommon Files |
| .YCL | Uncommon Files |
| .YCM | Uncommon Files |
| .YCN | Uncommon Files |
| .YCO | Uncommon Files |
| .YCP | Uncommon Files |
| .YCQ | Uncommon Files |
| .YCR | Uncommon Files |
| .YCS | Uncommon Files |
| .YCT | Uncommon Files |
| .YCU | Uncommon Files |
| .YCV | Uncommon Files |
| .YCW | Uncommon Files |
| .YCX | Uncommon Files |
| .YCY | Uncommon Files |
| .YCZ | Uncommon Files |
| .YD0 | Uncommon Files |
| .YD1 | Uncommon Files |
| .YD2 | Uncommon Files |
| .YD3 | Uncommon Files |
| .YD4 | Uncommon Files |
| .YD5 | Uncommon Files |
| .YD6 | Uncommon Files |
| .YD7 | Uncommon Files |
| .YD8 | Uncommon Files |
| .YD9 | Uncommon Files |
| .YDA | Uncommon Files |
| .YDB | Uncommon Files |
| .YDC | Game Files |
| .YDD | Uncommon Files |
| .YDE | Uncommon Files |
| .YDF | Uncommon Files |
| .YDG | Uncommon Files |
| .YDH | Uncommon Files |
| .YDI | Uncommon Files |
| .YDJ | Uncommon Files |
| .YDK | Uncommon Files |
| .YDL | 3D Image Files |
| .YDM | Uncommon Files |
| .YDN | Uncommon Files |
| .YDO | Uncommon Files |
| .YDP | Uncommon Files |
| .YDQ | Uncommon Files |
| .YDR | Uncommon Files |
| .YDS | Uncommon Files |
| .YDT | Uncommon Files |
| .YDU | Uncommon Files |
| .YDV | Uncommon Files |
| .YDW | Uncommon Files |
| .YDX | Uncommon Files |
| .YDY | Uncommon Files |
| .YDZ | Uncommon Files |
| .YE0 | Uncommon Files |
| .YE1 | Uncommon Files |
| .YE2 | Uncommon Files |
| .YE3 | Uncommon Files |
| .YE4 | Uncommon Files |
| .YE5 | Uncommon Files |
| .YE6 | Uncommon Files |
| .YE7 | Uncommon Files |
| .YE8 | Uncommon Files |
| .YE9 | Uncommon Files |
| .YEA | Uncommon Files |
| .YEAH | Uncommon Files |
| Extension | File Description |
| .YEAR | Uncommon Files |
| .YEB | Uncommon Files |
| .YEC | Uncommon Files |
| .YED | Uncommon Files |
| .YEE | Uncommon Files |
| .YEF | Uncommon Files |
| .YEG | Uncommon Files |
| .YEH | Uncommon Files |
| .YEI | Uncommon Files |
| .YEJ | Uncommon Files |
| .YEK | Uncommon Files |
| .YEL | Uncommon Files |
| .YEM | Uncommon Files |
| .YEN | Uncommon Files |
| .YENC | Encoded Files |
| .YEO | Uncommon Files |
| .YEP | Uncommon Files |
| .YEQ | Uncommon Files |
| .YER | Uncommon Files |
| .YES | Uncommon Files |
| .YET | Uncommon Files |
| .YEU | Uncommon Files |
| .YEV | Uncommon Files |
| .YEW | Uncommon Files |
| .YEX | Uncommon Files |
| .YEY | Uncommon Files |
| .YEZ | Uncommon Files |
| .YF0 | Uncommon Files |
| .YF1 | Uncommon Files |
| .YF2 | Uncommon Files |
| .YF3 | Uncommon Files |
| .YF4 | Uncommon Files |
| .YF5 | Uncommon Files |
| .YF6 | Uncommon Files |
| .YF7 | Uncommon Files |
| .YF8 | Uncommon Files |
| .YF9 | Uncommon Files |
| .YFA | Uncommon Files |
| .YFB | Uncommon Files |
| .YFC | Uncommon Files |
| .YFD | Uncommon Files |
| .YFE | Uncommon Files |
| .YFF | Uncommon Files |
| .YFG | Uncommon Files |
| .YFH | Uncommon Files |
| .YFI | Uncommon Files |
| .YFJ | Uncommon Files |
| .YFK | Uncommon Files |
| .YFL | Uncommon Files |
| .YFM | Uncommon Files |
| .YFN | Uncommon Files |
| .YFO | Uncommon Files |
| .YFP | Uncommon Files |
| .YFQ | Uncommon Files |
| .YFR | Uncommon Files |
| .YFS | Uncommon Files |
| .YFT | Uncommon Files |
| .YFU | Uncommon Files |
| .YFV | Uncommon Files |
| .YFW | Uncommon Files |
| .YFX | Uncommon Files |
| .YFY | Uncommon Files |
| .YFZ | Uncommon Files |
| .YG0 | Uncommon Files |
| .YG1 | Uncommon Files |
| .YG2 | Uncommon Files |
| .YG3 | Uncommon Files |
| .YG4 | Uncommon Files |
| .YG5 | Uncommon Files |
| .YG6 | Uncommon Files |
| .YG7 | Uncommon Files |
| .YG8 | Uncommon Files |
| .YG9 | Uncommon Files |
| .YGA | Uncommon Files |
| .YGB | Uncommon Files |
