| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [vb infin] [verb] [prep] | 928 |
|
| 2 | [vb infin] us [verb] [prep] | 149 |
|
| 3 | should [vb infin] us [prep] | 46 |
|
| 4 | should [vb infin] us [verb] | 41 |
|
