| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should have [vb pp] a | 213 |
|
| 2 | have [vb pp] a [adj -er] | 168 |
|
| 3 | should have a [adj -er] | 14 |
|
| 4 | should have [vb pp] [adj -er] | 11 |
|
