| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] [pron] [prep] | 28478 |
|
| 2 | could [vb infin] [pron] | 12148 |
|
| 3 | could [vb infin] [prep] | 9758 |
|
| 4 | could [pron] [prep] | 34 |
|
