| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | environment in which it be [verb] | 7 |
|
| 2 | environment in [Wh det] it be [verb] | 7 |
|
| 3 | environment in [Wh det] it be [vb pp] | 7 |
|
| 4 | environment in [Wh det] it is [verb] | 6 |
|
