| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] [not/n't] [adv] [vb infin] a | 10 |
|
| 2 | it [modal v] [not/n't] [adv] [vb infin] a | 10 |
|
| 3 | it [modal v] [not/n't] [adv] [vb infin] a | 10 |
|
| 4 | it [modal v] not [adv] [vb infin] a | 8 |
|
