| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must have become | 15 |
|
| 2 | [pers pn] must have become | 14 |
|
| 3 | [noun] must have become | 9 |
|
| 4 | he must have become | 5 |
|
| 5 | he must have become | 5 |
|
| 6 | it must have become | 5 |
|
| 7 | it must have become | 5 |
|
| 8 | must have become [adj] | 12 |
|
| 9 | must have become [adj] | 11 |
|
| 10 | must have become [adv] | 5 |
|
| 11 | must have become [adv] | 5 |
|
