| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [adv] [verb] | 8600 |
|
| 2 | it [is] [adv] [verb] | 6484 |
|
| 3 | [pron] [is] often [verb] | 583 |
|
| 4 | it [be] often [verb] | 437 |
|
| 5 | [pers pn] [is] often [verb] | 419 |
|
| 6 | it [is] often [verb] | 386 |
|
| 7 | it [is] often [verb] | 386 |
|
