| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have been [adv] at [adj] | 6 |
|
| 2 | [modal v] have been [adv] at [adj] | 6 |
|
| 3 | should have been [adv] at [adj] | 5 |
|
| 4 | should have been [adv] at [adj] | 5 |
|
