| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [pron] should [vb infin] | 2306 |
|
| 2 | [Wh adv] [pron] should [vb infin] | 715 |
|
| 3 | why [pron] [modal v] [vb infin] | 677 |
|
| 4 | why [pron] should [verb] | 413 |
|
| 5 | why [pron] should [vb infin] | 412 |
|
