| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] it is [verb] | 1080 |
|
| 2 | it is often [verb] | 364 |
|
| 3 | [adv] it is often | 32 |
|
| 4 | [adv] is often [verb] | 8 |
|
| 5 | [adv] it often [verb] | 7 |
|
