| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could n't [vb infin] [pron] [prep] | 369 |
|
| 2 | they could n't [vb infin] [pron] | 219 |
|
| 3 | they could [vb infin] [pron] [prep] | 99 |
|
| 4 | they could n't [vb infin] [prep] | 55 |
|
