| Count | Prefix |
|---|---|
| 1,298 | y- |
| 24 | y. |
| 86 | y0 |
| 153 | y1 |
| 522 | y2 |
| 119 | y3 |
| 105 | y4 |
| 61 | y5 |
| 43 | y6 |
| 55 | y7 |
| 78 | y8 |
| 56 | y9 |
| 32,598 | ya |
| 1,267 | yb |
| 1,886 | yc |
| 1,154 | yd |
| 19,000 | ye |
| 888 | yf |
| 961 | yg |
| 1,249 | yh |
| 6,349 | yi |
| 759 | yj |
| 1,149 | yk |
| 1,297 | yl |
| 2,222 | ym |
| 1,652 | yn |
| 64,066 | yo |
| 1,524 | yp |
| 382 | yq |
| 1,085 | yr |
| 2,534 | ys |
| 1,766 | yt |
| 15,484 | yu |
| 1,374 | yv |
| 1,173 | yw |
| 831 | yx |
| 1,309 | yy |
| 1,103 | yz |