| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what [pron] should [vb infin] | 73 |
|
| 2 | what [pron] should [vb infin] [prep] | 69 |
|
| 3 | [prep] [pron] should [vb infin] [prep] | 36 |
|
| 4 | [prep] what should [vb infin] [prep] | 8 |
|
