| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i should [vb infin] [vb pp] | 910 |
|
| 2 | should [vb infin] [been] [vb pp] | 751 |
|
| 3 | i should [vb infin] [been] | 132 |
|
| 4 | i [vb infin] [been] [vb pp] | 7 |
|
