| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been a [noun] | 1576 |
|
| 2 | [det] has been a | 178 |
|
| 3 | [det] has a [noun] | 84 |
|
| 4 | [det] has been [noun] | 21 |
|
| 5 | [det] been a [noun] | 8 |
|
