| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [adv] | 27371 |
|
| 2 | [pron] [vb mod] only | 4707 |
|
| 3 | [pron] [modal v] only | 4707 |
|
| 4 | [pron] could only | 931 |
|
