| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] hours a [noun sg] | 28 |
|
| 2 | a [adj] hours a [noun sg] | 27 |
|
| 3 | a [det] hours a [noun sg] | 25 |
|
| 4 | a few hours a [noun sg] | 18 |
|
| 5 | a few hours a [noun sg] | 18 |
|
| 6 | a [adj] hours a week | 12 |
|
| 7 | a half hours a [noun sg] | 7 |
|
| 8 | a half hours a [noun sg] | 7 |
|
| 9 | a [adj] hours a day | 6 |
|
