| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at [num] hour | 28 |
|
| 2 | [verb] at [num] hours | 27 |
|
| 3 | [vb pp] at [num] hour | 12 |
|
| 4 | [vb past] at [num] hour | 5 |
|
| 5 | [v-ing] at [num] hour | 5 |
|
