| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [vb infin] [be] | 2037 |
|
| 2 | should [vb infin] [conj] | 1920 |
|
| 3 | [vb infin] [be] [conj] | 852 |
|
| 4 | should [be] [conj] | 146 |
|
