| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] at | 1325 |
|
| 2 | [vb mod] at | 1325 |
|
| 3 | should [prep] | 712 |
|
| 4 | should [prep] | 712 |
|
| 5 | should at | 142 |
|
| 6 | should at | 142 |
|
