| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [noun] [verb] [prep] a | 15 |
|
| 2 | should [noun] [verb] [prep] [art] | 13 |
|
| 3 | should [noun] [verb] [prep] [art] | 13 |
|
| 4 | should [noun] [verb] [prep] a | 8 |
|
