| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] [to-vb] [prep] [adj] | 1960 |
|
| 2 | should [vb infin] [prep] [adj] | 905 |
|
| 3 | should [vb infin] [to-vb] [prep] | 227 |
|
| 4 | should [vb infin] [to-vb] [adj] | 210 |
|
