| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [not/n't] clear [conj] | 257 |
|
| 2 | it [be] clear [conj] a | 69 |
|
| 3 | it [be] [not/n't] [conj] a | 14 |
|
| 4 | [be] [not/n't] clear [conj] a | 7 |
|
