| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] is | 149 |
|
| 2 | it be is | 149 |
|
| 3 | it [is] is | 143 |
|
| 4 | it is is | 116 |
|
| 5 | it 's is | 27 |
|
| 6 | it [was/were] is | 6 |
|
