| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] at least [art] [adj] | 43 |
|
| 2 | should [vb infin] at least [adj] | 42 |
|
| 3 | should [vb infin] at [art] [adj] | 31 |
|
| 4 | should [vb infin] at least [art] | 17 |
|
