| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] n't [vb infin] [pron] | 16884 |
|
| 2 | [modal v] n't [vb infin] [pron] | 16884 |
|
| 3 | could [adv] [vb infin] [pron] | 7430 |
|
| 4 | could [not/n't] [vb infin] [pron] | 5480 |
|
| 5 | could not [vb infin] [pron] | 5473 |
|
| 6 | could n't [verb] [pron] | 3812 |
|
| 7 | could n't [vb infin] [pron] | 3809 |
|
