| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [subord] a [noun] | 328 |
|
| 2 | [prep] a [noun] should | 224 |
|
| 3 | [subord] a [noun] should | 60 |
|
| 4 | [prep] [subord] [noun] should | 55 |
|
