| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should have [vb pp] [prep] a [noun] | 23 |
|
| 2 | should have [vb pp] [prep] a [noun sg] | 21 |
|
| 3 | should have [vb pp] for a [noun] | 7 |
|
| 4 | should have gone [prep] a [noun] | 6 |
|
