| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | if it is [verb] | 1068 |
|
| 2 | [v-ing] it is [verb] | 50 |
|
| 3 | [v-ing] if it [verb] | 27 |
|
| 4 | [v-ing] if it is | 19 |
|
