| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] clear that | 279 |
|
| 2 | it is [v-ing] [adv] clear | 14 |
|
| 3 | is [v-ing] [adv] clear that | 11 |
|
| 4 | it is [v-ing] clear that | 9 |
|
