| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | as it is [verb] [prep] | 207 |
|
| 2 | it is often [verb] [prep] | 102 |
|
| 3 | as it is often [verb] | 21 |
|
| 4 | as is often [verb] [prep] | 5 |
|
