| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [adv] [verb] [conj] | 1791 |
|
| 2 | it [is] [adv] [verb] [conj] | 1551 |
|
| 3 | [pron] [is] often [verb] [conj] | 183 |
|
| 4 | it [be] often [verb] [conj] | 181 |
|
| 5 | it [is] often [verb] [conj] | 168 |
|
