| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [verb] | 18437 |
|
| 2 | it be do | 849 |
|
| 3 | it [be] do | 849 |
|
| 4 | [pron] is do | 666 |
|
| 5 | it [is] do | 485 |
|
