| Count | Prefix |
|---|---|
| 151 | wb- |
| 21 | wb. |
| 9 | wb0 |
| 25 | wb1 |
| 31 | wb2 |
| 20 | wb3 |
| 32 | wb4 |
| 23 | wb5 |
| 21 | wb6 |
| 4 | wb7 |
| 11 | wb8 |
| 9 | wb9 |
| 316 | wba |
| 150 | wbb |
| 390 | wbc |
| 139 | wbd |
| 192 | wbe |
| 121 | wbf |
| 182 | wbg |
| 138 | wbh |
| 203 | wbi |
| 48 | wbj |
| 64 | wbk |
| 152 | wbl |
| 177 | wbm |
| 100 | wbn |
| 145 | wbo |
| 165 | wbp |
| 15 | wbq |
| 216 | wbr |
| 396 | wbs |
| 192 | wbt |
| 102 | wbu |
| 78 | wbv |
| 99 | wbw |
| 39 | wbx |
| 50 | wby |
| 56 | wbz |