| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | before it [is] [verb] | 170 |
|
| 2 | [vb pp] it [is] [verb] | 72 |
|
| 3 | [vb pp] before it [verb] | 46 |
|
| 4 | [vb pp] before it [is] | 43 |
|
