| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [verb] at least [art] | 75 |
|
| 2 | [Wh det] [modal v] [verb] at [art] | 38 |
|
| 3 | [Wh det] [modal v] [verb] at least | 14 |
|
