| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [prep] [v-ing] | 2114 |
|
| 2 | be [prep] [v-ing] that | 378 |
|
| 3 | it be [v-ing] that | 125 |
|
| 4 | it [prep] [v-ing] that | 24 |
|
