| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [det] hours [verb] [art] [noun sg] | 7 |
|
| 2 | a few hours [verb] [art] [noun sg] | 5 |
|
| 3 | a few hours [verb] [art] [noun sg] | 5 |
|
| 4 | a [adj] hours [to-vb] [art] [noun sg] | 5 |
|
