| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] [adj] [modal v] [vb infin] | 1421 |
|
| 2 | [art] [adj] period [modal v] | 73 |
|
| 3 | [adj] period [modal v] [vb infin] | 65 |
|
| 4 | [art] period [modal v] [vb infin] | 16 |
|
