| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [adv] have done this | 14 |
|
| 2 | [vb mod] [not/n't] [vb infin] done this | 10 |
|
| 3 | [vb mod] not [vb infin] done this | 10 |
|
| 4 | could [adv] [vb infin] done this | 7 |
|
| 5 | [vb mod] n't [vb infin] done this | 6 |
|
