| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [be] a [noun] | 627 |
|
| 2 | there should [be] a | 534 |
|
| 3 | there should [be] [noun] | 146 |
|
| 4 | there [be] a [noun] | 98 |
|
