| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should have [been] [verb] [det] | 14 |
|
| 2 | should have been [verb] [det] | 14 |
|
| 3 | should have [been] [vb pp] [det] | 7 |
|
| 4 | should have [been] [v-ing] [det] | 7 |
|
| 5 | should have [been] [verb] this | 5 |
|
