| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [v-ing] to | 1196 |
|
| 2 | [adj] it [be] [v-ing] | 123 |
|
| 3 | [adj] it [be] to | 93 |
|
| 4 | [adj] [be] [v-ing] to | 40 |
|
