| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what they should [vb infin] | 22 |
|
| 2 | [prep] what they should do | 8 |
|
| 3 | about what they should [vb infin] | 7 |
|
| 4 | to what they should [vb infin] | 6 |
|
| 5 | of what they should [vb infin] | 5 |
|
