| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] clear [that] | 1964 |
|
| 2 | [be] [not/n't] clear | 858 |
|
| 3 | [be] [not/n't] [that] | 690 |
|
| 4 | [not/n't] clear [that] | 94 |
|
