| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it [is] [verb] | 7775 |
|
| 2 | [conj] [pron] [is] [v-ing] | 5637 |
|
| 3 | [conj] it [be] [v-ing] | 3094 |
|
