| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i should [verb] at this | 5 |
|
| 2 | i should [verb] at this | 5 |
|
| 3 | i should [vb infin] at this | 5 |
|
| 4 | i should [verb] at this | 5 |
|
