| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [adv] | 27371 |
|
| 2 | [pers pn] could [adv] | 25089 |
|
| 3 | they [modal v] [adv] | 16059 |
|
| 4 | they could [adv] | 2522 |
|
