| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they should [vb infin] [prep] [noun prp] | 14 |
|
| 2 | they should [verb] [prep] [noun prp] | 14 |
|
| 3 | they should [verb] [prep] [noun prp] | 14 |
|
| 4 | they should [verb] to [noun prp] | 7 |
|
