| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [vb infin] [prep] [art] | 1972 |
|
| 2 | should [vb infin] [prep] [art] | 1972 |
|
| 3 | [modal v] [vb infin] within [art] | 239 |
|
| 4 | should [verb] within [art] | 30 |
|
| 5 | should [vb infin] within [art] | 30 |
|
| 6 | should [vb infin] within [art] | 30 |
|
