| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | he should have been [verb] | 69 |
|
| 2 | he should have been [verb] | 69 |
|
| 3 | he should have been [vb pp] | 46 |
|
| 4 | he should have been [v-ing] | 23 |
|
