| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [v-ing] | 10696 |
|
| 2 | it [be] for | 1861 |
|
| 3 | [be] for [v-ing] | 279 |
|
| 4 | it for [v-ing] | 80 |
|
