| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [adj] [verb] | 4087 |
|
| 2 | it is often [adj] [verb] | 189 |
|
| 3 | it is [adv] often [verb] | 32 |
|
| 4 | it is [adv] often [adj] | 18 |
|
| 5 | is [adv] often [adj] [verb] | 11 |
|
