| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [pron] could [adv] | 1090 |
|
| 2 | [Wh adv] [pron] could [adv] | 309 |
|
| 3 | [Wh adv] [adv] [pron] could | 92 |
|
| 4 | [Wh adv] [adv] [pron] [adv] | 48 |
|
