| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] for [adv] [art] few hours | 8 |
|
| 2 | [verb] for [adv] a [det] hours | 8 |
|
| 3 | [vb pp] for [adv] [art] [det] hours | 6 |
|
| 4 | [verb] for only [art] [det] hours | 6 |
|
