| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [vb infin] [adv] at the [noun] | 14 |
|
| 2 | should [vb infin] [adv] at [art] [noun sg] | 12 |
|
| 3 | should [vb infin] [adv] at [art] [noun] | 11 |
|
