| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [verb] [to-vb] [conj] it [is] | 57 |
|
| 2 | [be] [v-ing] [to-vb] [conj] [pron] [is] | 38 |
|
| 3 | [be] [v-ing] [to-vb] [conj] it [be] | 32 |
|
| 4 | [be] [v-ing] [verb] [conj] it [is] | 18 |
|
