| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a few hours [art] | 20 |
|
| 2 | [prep] a few hours [art] | 20 |
|
| 3 | for a few hours [art] | 10 |
|
| 4 | for a few hours [art] | 10 |
|
| 5 | [prep] a few hours a | 9 |
|
| 6 | [prep] a few hours the | 8 |
|
