| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [vb infin] [prep] | 5558 |
|
| 2 | [vb infin] [prep] [adv] | 4256 |
|
| 3 | should [vb infin] [adv] | 2208 |
|
| 4 | should [prep] [adv] | 142 |
|
