| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [verb] [pers pn] [vb infin] [adv] | 243 |
|
| 2 | why [verb] [pers pn] [vb infin] [adv prt] | 90 |
|
| 3 | [adv] [verb] [pers pn] [vb infin] back | 74 |
|
| 4 | why [verb] [pers pn] [verb] back | 22 |
|
| 5 | why [verb] [pers pn] [vb infin] back | 18 |
|
| 6 | why [verb] [pron] [vb infin] back | 18 |
|
