| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] [pron] could | 1347 |
|
| 2 | [adv] i could | 1105 |
|
| 3 | [Wh adv] i [modal v] | 1068 |
|
| 4 | [Wh adv] i [vb mod] | 1068 |
|
| 5 | [Wh adv] i could | 198 |
|
