| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [verb] [verb] [art] | 1072 |
|
| 2 | should [verb] [vb pp] [art] | 583 |
|
| 3 | [modal v] [verb] kept [art] | 21 |
|
| 4 | [vb mod] [verb] kept [art] | 21 |
|
| 5 | should [verb] keep [art] | 17 |
|
| 6 | should [verb] kept [art] | 8 |
|
