| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a few hours [det] [noun sg] | 7 |
|
| 2 | [prep] a few hours [det] [noun sg] | 7 |
|
| 3 | for a few hours [det] [noun sg] | 6 |
|
| 4 | for a few hours [det] [noun sg] | 6 |
|
