| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [adj] [verb] | 19380 |
|
| 2 | it [be] often [verb] | 437 |
|
| 3 | [be] often [adj] [verb] | 424 |
|
| 4 | it [be] often [adj] | 332 |
|
