| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] been [adv] [prep] | 23 |
|
| 2 | must [vb infin] been [adv] [prep] | 23 |
|
| 3 | [modal v] [vb infin] been [adv] for | 22 |
|
| 4 | [vb mod] [vb infin] been [adv] for | 22 |
|
| 5 | must [vb infin] been [adv] for | 7 |
|
| 6 | must [vb infin] been [adv] for | 6 |
|
| 7 | must [vb infin] be [adv] for | 6 |
|
| 8 | must [verb] been [adv] for | 6 |
|
| 9 | must [vb infin] [been] [adv] for | 6 |
|
| 10 | must [vb infin] [be] [adv] for | 6 |
|
| 11 | must [vb infin] been [adv] for | 6 |
|
