| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [verb] [adv] [prep] [noun sg] | 15 |
|
| 2 | when [v-ing] [adv] [prep] [noun sg] | 8 |
|
| 3 | when [vb pp] [adv] [prep] [noun sg] | 7 |
|
