| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] [noun] ' | 284 |
|
| 2 | [prep] a [adj] hour [unc] | 16 |
|
| 3 | [prep] [art] [adj] hour ' | 16 |
|
| 4 | [prep] [art] [adj] hour ' | 16 |
|
| 5 | [prep] a [adj] hour ' | 14 |
|
