| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] for [det] a hour | 53 |
|
| 2 | for about [det] a hour | 44 |
|
| 3 | [verb] for about a hour | 21 |
|
| 4 | [verb] about [det] a hour | 17 |
|
| 5 | [verb] for about [det] a | 15 |
|
