| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [noun sg] [prep] hours [prep] | 78 |
|
| 2 | a [noun sg] [prep] [prep] a | 51 |
|
| 3 | [noun sg] [prep] hours [prep] a | 20 |
|
| 4 | a [noun sg] [prep] hours a | 8 |
|
