| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [coord] [vb mod] [verb] | 69 |
|
| 2 | could [coord] [vb mod] [vb infin] | 68 |
|
| 3 | could and [vb mod] [verb] | 50 |
|
| 4 | could [coord] should [verb] | 44 |
|
| 5 | could [coord] [vb mod] have | 23 |
|
| 6 | could [coord] [vb mod] have | 23 |
|
| 7 | could or [vb mod] [verb] | 19 |
|
| 8 | could [coord] would [verb] | 18 |
|
