| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [prep] a short time | 15 |
|
| 2 | [vb past] [prep] [art] short time | 15 |
|
| 3 | [vb past] [prep] [art] short time | 15 |
|
| 4 | [vb past] for [art] short time | 12 |
|
