| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [v-ing] [noun] [num] | 10 |
|
| 2 | it [be] [v-ing] [noun] [num] | 10 |
|
| 3 | it [is] [v-ing] [noun] [num] | 8 |
|
| 4 | it is [v-ing] [noun] [num] | 5 |
|
