| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | so why do n't you [vb infin] | 32 |
|
| 2 | so why do n't you [verb] | 32 |
|
| 3 | so why do n't you [adv] | 6 |
|
| 4 | so why do n't you [adv] | 6 |
|
