| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what they should [vb infin] | 67 |
|
| 2 | [prep] what should [vb infin] | 46 |
|
| 3 | [prep] they should [vb infin] | 32 |
|
| 4 | [prep] what they should | 28 |
|
