| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [modal v] [be] [verb] [prep] a | 1832 |
|
| 2 | [pron] could [be] [verb] [prep] [art] | 613 |
|
| 3 | [pron] could [be] [verb] [prep] [art] | 613 |
|
| 4 | [pron] could [be] [verb] [prep] a | 277 |
|
