| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it [be] [v-ing] | 3094 |
|
| 2 | [prep] [conj] it [be] | 1404 |
|
| 3 | [prep] it [be] [v-ing] | 126 |
|
| 4 | [prep] [conj] [be] [v-ing] | 18 |
|
