| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [vb infin] | 21338 |
|
| 2 | he could [vb infin] | 7702 |
|
| 3 | he could [not/n't] | 3606 |
|
| 4 | he [not/n't] [vb infin] | 140 |
|
