| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [not/n't] clear [conj] | 223 |
|
| 2 | is clear [conj] a | 57 |
|
| 3 | is [not/n't] [conj] a | 21 |
|
| 4 | [not/n't] clear [conj] a | 7 |
|
