| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] a few hours | 15 |
|
| 2 | [vb pp] a [det] hours | 15 |
|
| 3 | [vb pp] a [adj] hours | 15 |
|
| 4 | [vb pp] a few hours | 15 |
|
