| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] understand why [pron] [vb past] [pers pn] | 8 |
|
| 2 | not understand why [pron] [vb past] [pers pn] | 6 |
|
| 3 | n't understand why [pron] [vb past] [pers pn] | 6 |
|
| 4 | [not/n't] understand why [pron] [vb past] [pers pn] | 6 |
|
| 5 | understand why [pron] [vb past] [verb] [pers pn] | 5 |
|
