| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [verb] [verb] [prep] [art] | 4497 |
|
| 2 | [modal v] [verb] [verb] [prep] [art] | 4497 |
|
| 3 | could [verb] [verb] [prep] [art] | 395 |
|
