| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [vb infin] [been] [adj] [prep] [det] | 8 |
|
| 2 | should [verb] been [adj] [prep] [det] | 8 |
|
| 3 | should have [been] [adj] [prep] [det] | 8 |
|
| 4 | should have [been] [adj] [prep] [det] | 8 |
|
