| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [prep] [art] [adv] short time | 6 |
|
| 2 | [vb past] [prep] [art] [adv] short time | 6 |
|
| 3 | [vb past] [prep] a [adv] short time | 5 |
|
