| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could have [vb pp] [adv prt] [prep] | 100 |
|
| 2 | could have [vb pp] [adv prt] [prep] | 100 |
|
| 3 | [modal v] have [vb pp] [adv prt] for | 44 |
|
| 4 | [vb mod] have [vb pp] [adv prt] for | 44 |
|
| 5 | could have [vb pp] [adv] for | 12 |
|
| 6 | could have [vb pp] [adv prt] for | 9 |
|
| 7 | could have [vb pp] [adv prt] for | 9 |
|
| 8 | could [verb] [vb pp] [adv prt] for | 9 |
|
| 9 | could have [verb] [adv prt] for | 9 |
|
| 10 | could [vb infin] [vb pp] [adv prt] for | 9 |
|
| 11 | could have [vb pp] [adv prt] for | 9 |
|
