| Count | Prefix |
|---|---|
| 1,396 | co- |
| 99 | co. |
| 5 | co0 |
| 34 | co1 |
| 436 | co2 |
| 33 | co3 |
| 18 | co4 |
| 15 | co5 |
| 4 | co6 |
| 5 | co7 |
| 14 | co8 |
| 6 | co9 |
| 11,868 | coa |
| 3,891 | cob |
| 8,245 | coc |
| 13,776 | cod |
| 1,565 | coe |
| 5,475 | cof |
| 3,709 | cog |
| 1,623 | coh |
| 4,806 | coi |
| 215 | coj |
| 670 | cok |
| 48,385 | col |
| 80,479 | com |
| 83,676 | con |
| 20,773 | coo |
| 9,619 | cop |
| 416 | coq |
| 37,736 | cor |
| 15,610 | cos |
| 5,562 | cot |
| 20,996 | cou |
| 6,262 | cov |
| 3,743 | cow |
| 1,047 | cox |
| 1,122 | coy |
| 1,578 | coz |