| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a few hours [prep] [noun] | 15 |
|
| 2 | [prep] a [adj] hours [prep] [noun] | 15 |
|
| 3 | [prep] a few hours [prep] [noun] | 15 |
|
| 4 | [prep] a [det] hours [prep] [noun] | 15 |
|
| 5 | [prep] a [adj] hours [prep] [noun] | 15 |
|
| 6 | [prep] a [adj] hours [prep] [noun sg] | 9 |
|
| 7 | [prep] a [adj] hours [prep] [noun prp] | 6 |
|
| 8 | [prep] a [adj] hours of [noun] | 5 |
|
