| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] a [noun] [be] | 3717 |
|
| 2 | [subord] a [noun] is | 2721 |
|
| 3 | a [noun] is [be] | 218 |
|
| 4 | [subord] [noun] is [be] | 66 |
|
