| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [modal v] [be] [verb] [prep] a | 119 |
|
| 2 | [verb] could [be] [verb] [prep] [art] | 36 |
|
| 3 | [verb] could [be] [verb] [prep] [art] | 36 |
|
| 4 | [verb] could [be] [verb] [prep] a | 16 |
|
