| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | he [vb past] [pron] have [verb] | 671 |
|
| 2 | he [vb past] [pron] could [verb] | 224 |
|
| 3 | [vb past] [pron] could have [verb] | 68 |
|
| 4 | he [vb past] [pron] could have | 18 |
|
