| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when it [is] [vb pp] that [noun] | 12 |
|
| 2 | when it is [verb] that [noun] | 12 |
|
| 3 | when it [is] [verb] that [noun] | 12 |
|
| 4 | when it [is] [verb] that [noun pl] | 5 |
|
