| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adj] hours ' [noun] | 54 |
|
| 2 | a [adj] hours ' [noun] | 32 |
|
| 3 | [prep] a [adj] hours ' | 14 |
|
| 4 | [prep] a [adj] hours [noun] | 10 |
|
| 5 | [prep] a [adj] ' [noun] | 7 |
|
