| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [adv] [verb] [pron] could [verb] | 155 |
|
| 2 | [vb base] [adv] [verb] he [modal v] [verb] | 110 |
|
| 3 | [verb] [adv] [verb] he could [verb] | 44 |
|
