| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] he could | 1127 |
|
| 2 | [vb past] he could | 683 |
|
| 3 | [vb past] [verb] he | 681 |
|
| 4 | [vb past] [verb] could | 28 |
|
