| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [be] [vb pp] a [noun sg] | 64 |
|
| 2 | should not [be] a [noun sg] | 58 |
|
| 3 | not [be] [vb pp] a [noun sg] | 33 |
|
| 4 | should not [be] [vb pp] [noun sg] | 20 |
|
| 5 | should not [be] [vb pp] a | 14 |
|
