| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [adv] [vb infin] | 8471 |
|
| 2 | they [adv] [vb infin] | 529 |
|
| 3 | should they [vb infin] | 257 |
|
| 4 | should they [adv] | 44 |
|
