| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should have been [verb] for | 26 |
|
| 2 | should have been [verb] for | 26 |
|
| 3 | should [vb infin] been [verb] for | 26 |
|
| 4 | should [verb] been [vb pp] for | 23 |
|
