| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] only a [det] [noun] | 230 |
|
| 2 | [prep] [adv] a [det] hour | 35 |
|
| 3 | [prep] [adv] a [det] hour | 35 |
|
| 4 | [prep] only [art] [det] hour | 19 |
|
| 5 | [prep] only a [adj] hour | 19 |
|
| 6 | [prep] only a [det] hour | 19 |
|
