| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [det] hour | 331 |
|
| 2 | a [det] hour [unc] | 38 |
|
| 3 | [prep] a [det] [unc] | 17 |
|
| 4 | [prep] [det] hour [unc] | 8 |
|
