| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is often [verb] | 364 |
|
| 2 | is so often [verb] | 41 |
|
| 3 | it is so [verb] | 18 |
|
| 4 | it is so often | 12 |
|
| 5 | it so often [verb] | 9 |
|
