| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is often [verb] | 364 |
|
| 2 | it is [adv] use | 196 |
|
| 3 | [pron] is often use | 32 |
|
| 4 | it be often use | 22 |
|
| 5 | it [be] often use | 22 |
|
| 6 | it [is] often use | 17 |
|
