| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [subord] it [is] [verb] | 453 |
|
| 2 | [v-ing] [conj] it [is] [verb] | 78 |
|
| 3 | [v-ing] [subord] [pron] [is] [verb] | 55 |
|
| 4 | [v-ing] [subord] it [be] [verb] | 49 |
|
