| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [prep] [art] [adj] [num] hours | 9 |
|
| 2 | [vb past] [prep] the [adj] [adj] hours | 9 |
|
| 3 | [vb past] [prep] [art] [num ord] [adj] hours | 7 |
|
| 4 | [vb past] for [art] [adj] [adj] hours | 6 |
|
