| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] a couple [prep] hours [adv] | 9 |
|
| 2 | [adv] [art] couple [prep] hours [adv] | 9 |
|
| 3 | [adv] [art] couple of hours [adv] | 9 |
|
| 4 | [adv] [art] couple [prep] hours [adv] | 5 |
|
