| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv prt] [prep] [adv] a hour | 18 |
|
| 2 | [adv prt] [prep] [adv] a hour | 18 |
|
| 3 | [adv prt] [prep] [adv] an hour | 18 |
|
| 4 | [adv prt] for [adv] a hour | 16 |
|
| 5 | [adv prt] for [adv] a hour | 16 |
|
| 6 | [adv prt] [prep] about a hour | 10 |
|
| 7 | [adv prt] [prep] about a hour | 10 |
|
| 8 | [adv prt] [prep] over a hour | 6 |
|
| 9 | [adv prt] [prep] over a hour | 6 |
|
| 10 | out [prep] [adv] a hour | 5 |
|
| 11 | on [prep] [adv] a hour | 5 |
|
