| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] a [noun] | 45228 |
|
| 2 | [been] a [noun] | 6255 |
|
| 3 | [been] [to-vb] [noun] | 182 |
|
| 4 | [been] [to-vb] a | 85 |
|
