| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [num] hours or [adv] [prep] [noun sg] | 11 |
|
| 2 | [num] hour or [adv] per [noun sg] | 9 |
|
| 3 | [num] hour or more [prep] [noun sg] | 9 |
|
| 4 | [num] hour or [adv] [prep] week | 8 |
|
