| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [adv] [verb] [conj] [det] | 186 |
|
| 2 | it [is] often [verb] [conj] [adj] | 31 |
|
| 3 | it [be] often [verb] [conj] [det] | 15 |
|
| 4 | [pron] [is] often [verb] [conj] [det] | 14 |
|
