| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should have [vb pp] a [noun sg] | 126 |
|
| 2 | we should have a [noun sg] | 45 |
|
| 3 | we should have [vb pp] a | 23 |
|
| 4 | we should have [vb pp] [noun sg] | 5 |
|
