| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [verb] [prep] [prep] | 45 |
|
| 2 | it is [adv] [verb] [prep] [prep] | 41 |
|
| 3 | [pron] is often [verb] [prep] [prep] | 15 |
|
| 4 | it be often [verb] [prep] [prep] | 12 |
|
| 5 | it [be] often [verb] [prep] [prep] | 12 |
|
| 6 | it [is] often [verb] [prep] [prep] | 8 |
|
| 7 | it is often [verb] [prep] [prep] | 6 |
|
| 8 | it is often [verb] [prep] [prep] | 6 |
|
