| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [v-ing] to [be] | 694 |
|
| 2 | [is] [v-ing] to [be] [adj] | 372 |
|
| 3 | it [is] to [be] [adj] | 70 |
|
| 4 | it [is] [v-ing] to [adj] | 13 |
|
| 5 | it [v-ing] to [be] [adj] | 8 |
|
