| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] [be] before | 21 |
|
| 2 | it [verb] [be] before | 21 |
|
| 3 | it [verb] be before | 21 |
|
| 4 | it [vb past] [be] before | 21 |
|
| 5 | it [verb] been before | 21 |
|
| 6 | it have [be] before | 21 |
|
| 7 | it [verb] [been] before | 21 |
|
| 8 | it had [be] before | 20 |
|
