| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] [pron] [prep] | 1811 |
|
| 2 | could [verb] [pers pn] [prep] | 1282 |
|
| 3 | [modal v] [verb] us [prep] | 662 |
|
| 4 | [vb mod] [verb] us [prep] | 662 |
|
| 5 | could [verb] we [prep] | 45 |
|
| 6 | could [verb] us [prep] | 45 |
|
