| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] should they [vb infin] to | 6 |
|
| 2 | [adv] should they [vb infin] to | 6 |
|
| 3 | why should they [vb infin] to | 5 |
|
| 4 | why should they [vb infin] to | 5 |
|
