| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do n't [pers pn] [vb infin] [subord] | 12 |
|
| 2 | why do n't [pers pn] [vb infin] [subord] | 9 |
|
| 3 | why [vb base] n't [pers pn] [vb infin] [subord] | 9 |
|
| 4 | why [verb] n't you [vb infin] [subord] | 7 |
|
