| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] at least [art] couple | 8 |
|
| 2 | [to-vb] at least [art] couple | 8 |
|
| 3 | [to-vb] at least a couple | 8 |
|
| 4 | [to-vb] at least a couple | 8 |
|
