| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [subord] it [is] [adv] | 412 |
|
| 2 | [v-ing] [conj] it [is] [adv] | 147 |
|
| 3 | [v-ing] [subord] it [be] [adv] | 67 |
|
| 4 | [v-ing] [subord] [pron] [is] [adv] | 47 |
|
