| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] clear why [art] [noun] | 9 |
|
| 2 | not clear why [art] [noun] | 9 |
|
| 3 | [not/n't] clear why [art] [noun] | 9 |
|
| 4 | not clear why [art] [noun] | 9 |
|
| 5 | clear why [art] [noun] [prep] | 8 |
|
| 6 | clear why [art] [noun] [prep] | 8 |
|
| 7 | clear why [art] [noun] of | 7 |
|
| 8 | clear why [art] [noun] of | 7 |
|
