| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [vb infin] [be] [adv] [verb] | 476 |
|
| 2 | [vb mod] [verb] [been] [adv] [verb] | 413 |
|
| 3 | [modal v] [vb infin] [been] [adv] [verb] | 409 |
|
