| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [pron] [vb mod] [verb] [pron] | 17 |
|
| 2 | could [pron] [vb mod] [vb infin] [pron] | 17 |
|
| 3 | could [pron] [vb mod] [pron] [verb] | 20 |
|
| 4 | could [pron] [vb mod] [pron] [vb infin] | 20 |
|
