| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not [verb] him | 443 |
|
| 2 | [vb mod] not ask him | 24 |
|
| 3 | [modal v] not ask him | 24 |
|
| 4 | could not ask [pron] | 23 |
|
| 5 | could not ask [pers pn] | 21 |
|
| 6 | could [adv] ask him | 14 |
|
| 7 | could not ask he | 10 |
|
| 8 | could not ask him | 10 |
|
