| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [det] hours ' | 14 |
|
| 2 | [prep] a [det] hours ' | 14 |
|
| 3 | [prep] [art] [det] hours ' | 14 |
|
| 4 | [prep] [art] few hours ' | 14 |
|
| 5 | [prep] [art] [det] hours ' | 14 |
|
| 6 | for [art] [det] hours ' | 8 |
|
| 7 | for [art] [det] hours ' | 8 |
|
