| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a [det] [noun] [prep] | 350 |
|
| 2 | [noun] [prep] a [det] [noun pl] [prep] | 281 |
|
| 3 | [noun] [prep] a [det] hour [prep] | 13 |
|
| 4 | [noun] [prep] a [adj] hours [prep] | 12 |
|
| 5 | [noun] [prep] a [det] hours [prep] | 12 |
|
| 6 | [noun] [prep] [art] [det] hours [prep] | 12 |
|
| 7 | [noun] [prep] a [det] hours [prep] | 12 |
|
