| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] hours of [noun] | 23 |
|
| 2 | a [adj] hours of [noun sg] | 23 |
|
| 3 | a [det] hours of [noun] | 22 |
|
| 4 | a few hours of [noun] | 15 |
|
| 5 | a few hours of [noun] | 15 |
|
| 6 | a half hours of [noun] | 7 |
|
| 7 | a half hours of [noun] | 7 |
|
