| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] only a few hours | 19 |
|
| 2 | [prep] only a few hour | 19 |
|
| 3 | [prep] only a few hour | 19 |
|
| 4 | [prep] only a few hour | 19 |
|
| 5 | for only a few hour | 7 |
|
| 6 | for only a few hour | 7 |
|
