| Count | Prefix |
|---|---|
| 1,256 | y- |
| 21 | y. |
| 81 | y0 |
| 151 | y1 |
| 505 | y2 |
| 113 | y3 |
| 103 | y4 |
| 54 | y5 |
| 40 | y6 |
| 54 | y7 |
| 73 | y8 |
| 54 | y9 |
| 31,314 | ya |
| 1,190 | yb |
| 1,794 | yc |
| 1,090 | yd |
| 18,335 | ye |
| 837 | yf |
| 906 | yg |
| 1,201 | yh |
| 6,101 | yi |
| 739 | yj |
| 1,060 | yk |
| 1,232 | yl |
| 2,092 | ym |
| 1,590 | yn |
| 61,903 | yo |
| 1,459 | yp |
| 365 | yq |
| 1,011 | yr |
| 2,379 | ys |
| 1,678 | yt |
| 14,868 | yu |
| 1,323 | yv |
| 1,137 | yw |
| 785 | yx |
| 1,271 | yy |
| 1,068 | yz |