| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have [been] [adv] [prep] | 157 |
|
| 2 | should have [been] [adv] [prep] | 32 |
|
| 3 | should [verb] [been] [adv] [prep] | 22 |
|
| 4 | should have [be] [adv] [prep] | 22 |
|
