| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] hours [prep] | 58 |
|
| 2 | [vb past] [prep] a [adj] [prep] | 45 |
|
| 3 | [vb past] [prep] [adj] hours [prep] | 45 |
|
| 4 | [vb past] [prep] a [adj] hours | 8 |
|
| 5 | [vb past] a [adj] hours [prep] | 5 |
|
