| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when we [vb past] and [verb] | 12 |
|
| 2 | when we [vb past] [coord] [verb] | 12 |
|
| 3 | when we [vb past] and [verb] | 12 |
|
| 4 | when we [vb past] [conj] [vb past] | 11 |
|
