| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [prep] only a few hours | 7 |
|
| 2 | [vb pp] [prep] only a few hours | 7 |
|
| 3 | [vb pp] [prep] only a few hours | 7 |
|
| 4 | [vb pp] for only a few hours | 5 |
|
| 5 | [vb pp] for only a few hours | 5 |
|
