| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] be [verb] a [noun] | 1492 |
|
| 2 | [to-vb] be [verb] [art] [noun] | 363 |
|
| 3 | [to-vb] [be] [verb] a [noun] | 127 |
|
