| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [conj] [pron] could [verb] | 1209 |
|
| 2 | [adj] [conj] [pron] [vb mod] have | 1064 |
|
| 3 | [adj] [conj] [pron] [modal v] have | 1064 |
|
| 4 | [adj] [conj] [pron] could have | 153 |
|
