| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [verb] | 51078 |
|
| 2 | it [is] [verb] | 26432 |
|
| 3 | it [be] [is] | 175 |
|
| 4 | [be] [is] [verb] | 121 |
|
