| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why did n't you [vb infin] | 387 |
|
| 2 | but why did you [vb infin] | 16 |
|
| 3 | but did n't you [vb infin] | 10 |
|
| 4 | but why did n't you | 10 |
|
