| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [vb infin] a few hours | 10 |
|
| 2 | [modal v] [vb infin] a few hours | 10 |
|
| 3 | [adv] [vb infin] a few hours | 5 |
|
| 4 | [vb infin] [prep] a few hours | 10 |
|
| 5 | [vb infin] [prep] a few hours | 10 |
|
| 6 | [vb infin] for a few hours | 5 |
|
| 7 | [vb infin] for a few hours | 5 |
|
| 8 | [vb infin] a few hours [prep] | 6 |
|
| 9 | [vb infin] a few hours [prep] | 6 |
|
