| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | as it [verb] been before | 12 |
|
| 2 | as it [verb] [be] before | 12 |
|
| 3 | as it [verb] [been] before | 12 |
|
| 4 | as it [verb] be before | 12 |
|
| 5 | as it have [be] before | 12 |
|
| 6 | as it [vb past] [be] before | 12 |
|
| 7 | as it had [be] before | 11 |
|
