| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adv] a hour | 222 |
|
| 2 | [pron] [prep] [adv] a | 170 |
|
| 3 | [pron] [prep] a hour | 54 |
|
| 4 | [pron] [adv] a hour | 30 |
|
