| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] [conj] | 13886 |
|
| 2 | is often [verb] | 1903 |
|
| 3 | often [verb] [conj] | 1234 |
|
| 4 | is often [conj] | 21 |
|
