| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] when it [is] | 40 |
|
| 2 | [subord] when it [is] | 40 |
|
| 3 | [subord] when it is | 29 |
|
| 4 | than when it [is] | 18 |
|
| 5 | [subord] when it 's | 11 |
|
| 6 | as when it [is] | 5 |
|
