| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [verb] as [art] | 1389 |
|
| 2 | [modal v] then [verb] [art] | 552 |
|
| 3 | then [verb] as [art] | 137 |
|
| 4 | [modal v] then [verb] as | 16 |
|
