| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a [det] | 2754 |
|
| 2 | [prep] a [det] hours | 324 |
|
| 3 | [noun] [prep] [det] hours | 122 |
|
| 4 | [noun] a [det] hours | 25 |
|
