| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [verb] [verb] [prep] a [noun sg] | 722 |
|
| 2 | [modal v] [verb] [verb] as [art] [noun sg] | 132 |
|
| 3 | [modal v] [verb] [verb] as a [noun] | 117 |
|
