| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] n't [vb infin] [det] | 4432 |
|
| 2 | [vb mod] n't [vb infin] [det] | 4432 |
|
| 3 | could [adv] [vb infin] [det] | 1572 |
|
| 4 | could [not/n't] [vb infin] [det] | 1123 |
|
| 5 | could not [vb infin] [det] | 1122 |
|
| 6 | could n't [vb infin] [adj] | 931 |
|
| 7 | could n't [vb infin] [det] | 739 |
|
| 8 | could n't [verb] [det] | 739 |
|
