| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] [prep] a | 7831 |
|
| 2 | [modal v] [vb infin] for [art] | 2313 |
|
| 3 | [modal v] [vb infin] for [art] | 2313 |
|
| 4 | [modal v] [vb infin] for a | 1046 |
|
| 5 | [modal v] [verb] for a | 946 |
|
