| Count | Prefix |
|---|---|
| 4,066 | x- |
| 25 | x. |
| 170 | x0 |
| 383 | x1 |
| 437 | x2 |
| 335 | x3 |
| 227 | x4 |
| 157 | x5 |
| 97 | x6 |
| 91 | x7 |
| 165 | x8 |
| 97 | x9 |
| 4,941 | xa |
| 2,044 | xb |
| 3,384 | xc |
| 1,487 | xd |
| 5,763 | xe |
| 1,463 | xf |
| 1,022 | xg |
| 1,170 | xh |
| 9,952 | xi |
| 958 | xj |
| 535 | xk |
| 2,638 | xl |
| 3,830 | xm |
| 2,059 | xn |
| 3,491 | xo |
| 5,417 | xp |
| 442 | xq |
| 2,033 | xr |
| 3,341 | xs |
| 5,422 | xt |
| 2,050 | xu |
| 686 | xv |
| 803 | xw |
| 6,226 | xx |
| 2,759 | xy |
| 709 | xz |