| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been a [noun] | 1576 |
|
| 2 | has been [det] [noun] | 358 |
|
| 3 | been [det] a [noun] | 109 |
|
| 4 | has been [det] a | 40 |
|
| 5 | has [det] a [noun] | 40 |
|
