| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when it is [verb] that a | 5 |
|
| 2 | when it [is] [verb] that a | 5 |
|
| 3 | when it [is] [vb pp] that a | 5 |
|
| 4 | when it [is] [verb] that a | 5 |
|
