| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] hours [noun sg] | 13 |
|
| 2 | a [det] hours [noun sg] | 12 |
|
| 3 | a few hours [noun sg] | 11 |
|
| 4 | a few hours [noun sg] | 11 |
|
