| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [prep] [verb] | 2223 |
|
| 2 | it [be] [prep] [v-ing] | 2114 |
|
| 3 | [pron] [be] [prep] having | 76 |
|
| 4 | it [be] [prep] have | 74 |
|
| 5 | it [be] [prep] having | 58 |
|
