| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] for a [det] hours | 7 |
|
| 2 | [to-vb] for [art] [det] hours | 7 |
|
| 3 | [to-vb] for a [det] hours | 7 |
|
| 4 | [to-vb] for [art] few hours | 7 |
|
| 5 | [to-vb] for [art] [det] hours | 7 |
|
