| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [vb past] not [pers pn] think | 21 |
|
| 2 | why [vb past] n't [pron] think | 21 |
|
| 3 | why [vb past] not [pron] think | 19 |
|
| 4 | why did not [pron] think | 19 |
|
| 5 | why [vb past] not i think | 17 |
|
| 6 | why [vb past] not i think | 17 |
|
