| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [prep] [adv] an hour | 8 |
|
| 2 | [adj] for [adv] an hour | 7 |
|
| 3 | [adj] for [adv] an hour | 7 |
|
| 4 | [adj] [prep] over an hour | 5 |
|
