| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when they [vb past] at the [adj] | 9 |
|
| 2 | when they [verb] at the [adj] | 8 |
|
| 3 | when they arrive at the [adj] | 5 |
|
| 4 | when they arrived at the [adj] | 5 |
|
