| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [verb] for | 368 |
|
| 2 | [is] [verb] for [v-ing] | 171 |
|
| 3 | it [is] [verb] [v-ing] | 68 |
|
| 4 | it [is] for [v-ing] | 37 |
|
| 5 | it [verb] for [v-ing] | 17 |
|
