| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [no cls] he could [adv] [vb infin] | 9 |
|
| 2 | [no cls] he could n't [vb infin] | 7 |
|
| 3 | [no cls] he could [not/n't] [vb infin] | 7 |
|
| 4 | [no cls] he could not [vb infin] | 7 |
|
