| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be a [noun] | 133582 |
|
| 2 | a [noun] [unc] | 18378 |
|
| 3 | be [noun] [unc] | 6390 |
|
| 4 | be a [unc] | 972 |
|
