| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should have be [adv] at | 7 |
|
| 2 | should [vb infin] be [adv] at | 7 |
|
| 3 | should have be [adv] at | 7 |
|
| 4 | should [verb] been [adv] at | 7 |
|
| 5 | should [verb] be [adv] at | 7 |
|
