| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | for a few hour | 157 |
|
| 2 | [to-vb] for a few | 57 |
|
| 3 | [to-vb] for a hour | 19 |
|
| 4 | [to-vb] a few hour | 14 |
|
