| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | for a [det] hours | 157 |
|
| 2 | [vb infin] for a [det] | 57 |
|
| 3 | [vb infin] a [det] hours | 20 |
|
| 4 | [vb infin] for [det] hours | 9 |
|
