| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] a [noun sg] | 37850 |
|
| 2 | should [vb infin] a | 2319 |
|
| 3 | should [vb infin] [noun sg] | 1704 |
|
| 4 | should a [noun sg] | 169 |
|
