| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] [vb infin] [been] | 3764 |
|
| 2 | it [vb mod] n't [vb infin] | 2187 |
|
| 3 | [vb mod] n't [vb infin] [been] | 624 |
|
