| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [vb infin] [verb] [prep] the first | 8 |
|
| 2 | should [vb infin] [verb] [prep] the first | 8 |
|
| 3 | should have [verb] [prep] the first | 7 |
|
| 4 | should [vb infin] [vb pp] [prep] the first | 7 |
|
