| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | for a [det] hours [prep] | 26 |
|
| 2 | for [art] few hours [prep] | 26 |
|
| 3 | for [art] [det] hours in | 8 |
|
| 4 | for [art] [det] hours at | 6 |
|
