| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [num] hours [prep] [noun sg] | 55 |
|
| 2 | a [adj] hours [prep] [noun sg] | 53 |
|
| 3 | a [adj] [num] [prep] [noun sg] | 41 |
|
| 4 | a [adj] [num] hours [prep] | 23 |
|
