| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] they should [vb infin] [verb] | 21 |
|
| 2 | [adv] they should have [verb] | 15 |
|
| 3 | [adv] they should [verb] [vb pp] | 15 |
|
| 4 | [adv] they should have [verb] | 15 |
|
| 5 | perhaps they should [verb] [verb] | 6 |
|
| 6 | then they should [verb] [verb] | 5 |
|
