| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] [pron] [modal v] [verb] [pron] | 868 |
|
| 2 | could [vb infin] [pron] [verb] [pron] | 205 |
|
| 3 | could [vb infin] [pron] [modal v] [verb] | 61 |
|
| 4 | could [pron] [modal v] [verb] [pron] | 17 |
|
| 5 | could [vb infin] [modal v] [verb] [pron] | 9 |
|
