| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [vb pp] [verb] | 1085 |
|
| 2 | is [vb pp] [is] [verb] | 96 |
|
| 3 | it is [vb pp] [is] | 37 |
|
| 4 | it is [is] [verb] | 8 |
|
