| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do [not/n't] it [vb infin] | 17 |
|
| 2 | why do n't it [verb] | 17 |
|
| 3 | why do [not/n't] it [verb] | 17 |
|
| 4 | why does [not/n't] it [verb] | 13 |
|
