| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [vb infin] put [art] | 6 |
|
| 2 | should have put [art] | 6 |
|
| 3 | should [vb infin] put a | 5 |
|
| 4 | should [vb infin] put a | 5 |
|
