| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] have [verb] [pron] [prep] | 63 |
|
| 2 | could [adv] have [verb] [pron] [prep] | 63 |
|
| 3 | [modal v] [adv] have [verb] [pron] to | 60 |
|
| 4 | [vb mod] [adv] have [verb] [pron] to | 60 |
|
| 5 | could [adv] [verb] [verb] [pron] to | 19 |
|
| 6 | could [adv] have [verb] [pron] to | 15 |
|
| 7 | could [adv] have [verb] [pron] to | 15 |
|
