| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] [adv] when it [verb] | 20 |
|
| 2 | [vb infin] [adv] when it [vb -s] | 13 |
|
| 3 | [vb infin] [adv prt] when it [verb] | 10 |
|
| 4 | [vb infin] [adv] when it [verb] | 10 |
|
| 5 | [vb infin] [adv] when it [vb past] | 7 |
|
