| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [v-ing] [noun] | 498 |
|
| 2 | it [be] [noun] [num] | 196 |
|
| 3 | [be] [v-ing] [noun] [num] | 174 |
|
| 4 | it [be] [v-ing] [num] | 70 |
|
| 5 | it [v-ing] [noun] [num] | 5 |
|
