| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [vb pp] [verb] | 1085 |
|
| 2 | is [vb pp] [verb] [pron] | 800 |
|
| 3 | it is [verb] [pron] | 493 |
|
| 4 | it is [vb pp] [pron] | 170 |
|
| 5 | it [vb pp] [verb] [pron] | 10 |
|
