| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | perhaps he should [vb infin] | 44 |
|
| 2 | perhaps he should [vb infin] | 44 |
|
| 3 | perhaps he should [vb infin] | 44 |
|
| 4 | perhaps he should have | 15 |
|
