| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be clear that | 1795 |
|
| 2 | it be clear that | 1795 |
|
| 3 | it is clear that | 1286 |
|
| 4 | it was clear that | 447 |
|
| 5 | it 's clear that | 60 |
|
