| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [adv] [subord] | 229 |
|
| 2 | [modal v] [vb infin] well [subord] | 135 |
|
| 3 | could [vb infin] well [conj] | 22 |
|
| 4 | could [verb] well [subord] | 18 |
|
