| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [verb] | 45395 |
|
| 2 | [vb -s] [pron] [verb] | 20235 |
|
| 3 | [vb -s] [pron] could | 294 |
|
| 4 | [vb -s] could [verb] | 21 |
|
