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