| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do n't [pron] [vb infin] [adv] | 226 |
|
| 2 | why do n't [pron] [vb infin] [adv prt] | 163 |
|
| 3 | why [verb] n't [pron] [vb infin] back | 27 |
|
| 4 | why do n't [pron] [vb infin] back | 27 |
|
| 5 | why do n't [pron] [vb infin] back | 20 |
|
| 6 | why [vb base] n't [pron] [vb infin] back | 20 |
|
| 7 | why do [adv] [pron] [vb infin] back | 20 |
|
| 8 | [adv] do n't [pron] [vb infin] back | 20 |
|
| 9 | why do not [pron] [vb infin] back | 20 |
|
| 10 | why do [not/n't] [pron] [vb infin] back | 20 |
|
| 11 | why do n't [pron] [verb] back | 20 |
|
