| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [adv] [vb infin] [prep] [art] [adj] | 1993 |
|
| 2 | [modal v] [adv] [vb infin] [prep] [art] [adj] | 1993 |
|
| 3 | [modal v] [adv] [verb] at [art] [adj] | 81 |
|
| 4 | [modal v] [adv] [vb infin] at [art] [adj] | 79 |
|
