| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [prep] [v-ing] that | 333 |
|
| 2 | it be [prep] [v-ing] [det] | 108 |
|
| 3 | be [prep] [v-ing] that [det] | 42 |
|
| 4 | it be [v-ing] that [det] | 17 |
|
