| Count | Prefix |
|---|---|
| 595 | mt- |
| 31 | mt. |
| 12 | mt0 |
| 32 | mt1 |
| 44 | mt2 |
| 16 | mt3 |
| 26 | mt4 |
| 9 | mt5 |
| 16 | mt6 |
| 13 | mt7 |
| 11 | mt8 |
| 12 | mt9 |
| 846 | mta |
| 736 | mtb |
| 949 | mtc |
| 326 | mtd |
| 709 | mte |
| 244 | mtf |
| 682 | mtg |
| 525 | mth |
| 566 | mti |
| 93 | mtj |
| 214 | mtk |
| 477 | mtl |
| 660 | mtm |
| 1,026 | mtn |
| 389 | mto |
| 555 | mtp |
| 19 | mtq |
| 647 | mtr |
| 1,206 | mts |
| 323 | mtt |
| 203 | mtu |
| 730 | mtv |
| 257 | mtw |
| 104 | mtx |
| 64 | mty |
| 136 | mtz |