| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they should [vb infin] [verb] [det] | 18 |
|
| 2 | they should have [verb] [det] | 14 |
|
| 3 | they should [vb infin] [vb pp] [det] | 14 |
|
| 4 | they should [vb infin] [verb] that | 5 |
|
