| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] been [prep] | 612 |
|
| 2 | [pron] [verb] been before | 46 |
|
| 3 | it [verb] be before | 21 |
|
| 4 | it [verb] [been] before | 21 |
|
| 5 | it [verb] [be] before | 21 |
|
