| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [modal v] [not/n't] [verb] | 1758 |
|
| 2 | [adj] [modal v] [not/n't] [vb infin] | 1750 |
|
| 3 | [adj] [modal v] [adv] happen | 200 |
|
| 4 | [adj] [modal v] [not/n't] happen | 127 |
|
