| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [v-ing] [prep] [noun] | 332 |
|
| 2 | [be] [v-ing] [prep] [noun] to | 292 |
|
| 3 | it [be] [prep] [noun] to | 81 |
|
| 4 | it [be] [v-ing] [noun] to | 18 |
|
