| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [v-ing] to [be] | 927 |
|
| 2 | be [v-ing] to [be] [prep] | 260 |
|
| 3 | it be to [be] [prep] | 32 |
|
| 4 | it [v-ing] to [be] [prep] | 11 |
|
