| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [verb] [conj] | 14867 |
|
| 2 | [is] often [verb] | 1943 |
|
| 3 | often [verb] [conj] | 1234 |
|
| 4 | [is] often [conj] | 24 |
|
