| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] it [is] [verb] | 4795 |
|
| 2 | it [is] often [verb] | 386 |
|
| 3 | [subord] it [is] often | 86 |
|
| 4 | [subord] [is] often [verb] | 50 |
|
| 5 | [subord] it often [verb] | 30 |
|
