| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [adv] [be] a [noun sg] | 132 |
|
| 2 | [adv] [be] [vb pp] a [noun sg] | 128 |
|
| 3 | should [be] [vb pp] a [noun sg] | 64 |
|
| 4 | should [adv] [be] [vb pp] [noun sg] | 29 |
|
| 5 | should [adv] [be] [vb pp] a | 23 |
|
