| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [vb infin] [art] | 6887 |
|
| 2 | [vb infin] on [art] | 4834 |
|
| 3 | should [vb infin] on | 395 |
|
| 4 | should on [art] | 6 |
|
