| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adv] a [det] [noun] | 473 |
|
| 2 | [prep] [adv] a [det] [noun pl] | 434 |
|
| 3 | [prep] [adv] a [adj] hours | 36 |
|
| 4 | [prep] [adv] [art] [det] hours | 35 |
|
| 5 | [prep] [adv] a [det] hour | 35 |
|
