| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [be] [vb pp] and not heard | 9 |
|
| 2 | should [be] [vb pp] [coord] not heard | 9 |
|
| 3 | should be [vb pp] [coord] not heard | 9 |
|
| 4 | should [be] seen [coord] not heard | 9 |
|
| 5 | should be [vb pp] [coord] not heard | 9 |
|
