| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [modal v] [vb infin] at least [art] | 6 |
|
| 2 | which [modal v] [verb] at least [art] | 6 |
|
| 3 | which [vb mod] [verb] at least [art] | 6 |
|
| 4 | which [modal v] [verb] at least a | 5 |
|
