| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | so often [vb pp] | 214 |
|
| 2 | [vb -s] often [vb pp] | 178 |
|
| 3 | [vb -s] so [vb pp] | 52 |
|
| 4 | [vb -s] so often | 29 |
|
