| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [det] hours [unc] | 36 |
|
| 2 | a [det] hours ' | 35 |
|
| 3 | a [det] hours ['s] | 35 |
|
| 4 | a [det] hours ' | 35 |
|
| 5 | a few hours [unc] | 32 |
|
