| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] [verb] [conj] | 5011 |
|
| 2 | [be] often [verb] [conj] | 493 |
|
| 3 | be often [verb] [conj] | 493 |
|
| 4 | [is] often [verb] [conj] | 288 |
|
