| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i should [vb infin] [verb] [prep] a | 8 |
|
| 2 | i should [vb infin] [verb] [prep] a | 8 |
|
| 3 | i should [vb infin] [to-vb] [prep] a | 5 |
|
