| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [prep] [verb] | 2223 |
|
| 2 | [v-ing] it [be] [verb] | 180 |
|
| 3 | [v-ing] it [prep] [verb] | 107 |
|
| 4 | [v-ing] it [be] [prep] | 50 |
|
| 5 | [v-ing] [be] [prep] [verb] | 20 |
|
