| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] [prep] a | 1246 |
|
| 2 | [modal v] [verb] for a | 1073 |
|
| 3 | [vb mod] [verb] for a | 1073 |
|
| 4 | could [verb] for [art] | 238 |
|
| 5 | could [verb] for a | 116 |
|
