| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why did n't i [vb infin] | 44 |
|
| 2 | why do n't i [vb infin] | 41 |
|
| 3 | why do n't i think | 15 |
|
| 4 | why do n't i go | 8 |
|
| 5 | why do n't i get | 5 |
|
