| Count | Prefix |
|---|---|
| 97 | wc- |
| 11 | wc. |
| 7 | wc0 |
| 16 | wc1 |
| 40 | wc2 |
| 20 | wc3 |
| 13 | wc4 |
| 6 | wc5 |
| 5 | wc6 |
| 5 | wc7 |
| 6 | wc8 |
| 5 | wc9 |
| 446 | wca |
| 209 | wcb |
| 524 | wcc |
| 180 | wcd |
| 188 | wce |
| 237 | wcf |
| 175 | wcg |
| 291 | wch |
| 253 | wci |
| 62 | wcj |
| 79 | wck |
| 225 | wcl |
| 272 | wcm |
| 124 | wcn |
| 327 | wco |
| 254 | wcp |
| 25 | wcq |
| 301 | wcr |
| 489 | wcs |
| 245 | wct |
| 119 | wcu |
| 74 | wcv |
| 172 | wcw |
| 19 | wcx |
| 55 | wcy |
| 35 | wcz |