| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what [pers pn] should have [be] | 5 |
|
| 2 | [prep] what [pers pn] should have been | 5 |
|
| 3 | [prep] what [pers pn] should have [been] | 5 |
|
| 4 | [prep] what [pers pn] should have be | 5 |
|
