| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | perhaps she [vb mod] [verb] a | 14 |
|
| 2 | perhaps she [modal v] [vb infin] a | 13 |
|
| 3 | perhaps she should [verb] a | 6 |
|
| 4 | perhaps she should [verb] a | 6 |
|
