| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when you [vb mod] n't [vb infin] | 13 |
|
| 2 | when you [vb mod] n't [verb] | 13 |
|
| 3 | when you could n't [verb] | 6 |
|
| 4 | when you ca n't [verb] | 6 |
|
