| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it [is] [adj] [to-vb] [prep] | 415 |
|
| 2 | [subord] it [be] [adj] [to-vb] [prep] | 164 |
|
| 3 | [subord] [pron] [is] [adj] [to-vb] [prep] | 159 |
|
| 4 | [subord] it [is] [adj] [verb] [prep] | 151 |
|
