| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] [be] [verb] [prep] | 2039 |
|
| 2 | [pron] [verb] [be] working [prep] | 279 |
|
| 3 | it [verb] [be] [v-ing] [prep] | 135 |
|
| 4 | it [verb] [be] work [prep] | 8 |
|
| 5 | it [verb] [be] working [prep] | 6 |
|
