| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] [be] [verb] [prep] [art] | 208 |
|
| 2 | [modal v] [verb] [be] [verb] for [art] | 64 |
|
| 3 | [vb mod] [verb] [be] [verb] for [art] | 64 |
|
| 4 | could [verb] [be] [verb] for [art] | 14 |
|
