| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could n't let [vb infin] | 5 |
|
| 2 | [pron] could [not/n't] let [vb infin] | 5 |
|
| 3 | [pers pn] could [not/n't] let [vb infin] | 5 |
|
