| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [verb] [prep] [art] | 1973 |
|
| 2 | [modal v] remain [prep] [art] | 259 |
|
| 3 | [vb mod] remain [prep] [art] | 259 |
|
| 4 | should remain [prep] [art] | 41 |
|
| 5 | should remain [prep] [art] | 41 |
|
