| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it 's [adv] [verb] [prep] | 588 |
|
| 2 | it 's [adv] [verb] [prep] | 391 |
|
| 3 | it [be] often [verb] [prep] | 123 |
|
| 4 | it be often [verb] [prep] | 123 |
|
| 5 | it [is] often [verb] [prep] | 110 |
|
| 6 | [pron] 's often [verb] [prep] | 11 |
|
| 7 | it 's often [verb] [prep] | 8 |
|
| 8 | it 's often [verb] [prep] | 8 |
|
