| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it 's [be] [v-ing] | 151 |
|
| 2 | it [be] [v-ing] for | 142 |
|
| 3 | 's [be] [v-ing] for | 110 |
|
| 4 | it 's [be] for | 8 |
|
