| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what you should [vb infin] [vb pp] | 7 |
|
| 2 | what you should [vb infin] [vb pp] | 7 |
|
| 3 | what you should [vb infin] [vb pp] | 7 |
|
| 4 | what you should have [vb pp] | 6 |
|
