| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should have been [verb] about | 10 |
|
| 2 | should have been [verb] about | 9 |
|
| 3 | should have been [vb pp] about | 5 |
|
| 4 | should have been [v-ing] about | 5 |
|
