| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] for [verb] | 37 |
|
| 2 | it [is] for [v-ing] | 37 |
|
| 3 | it 's for [verb] | 26 |
|
| 4 | it is for [verb] | 11 |
|
