| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [verb] | 5806 |
|
| 2 | it is often [verb] | 364 |
|
| 3 | is [adv] often [verb] | 228 |
|
| 4 | it is [adv] often | 113 |
|
| 5 | it [adv] often [verb] | 23 |
|
