| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been a [noun] | 1339 |
|
| 2 | has been [prep] [noun] | 716 |
|
| 3 | been [prep] a [noun] | 703 |
|
| 4 | has been [prep] a | 130 |
|
| 5 | has [prep] a [noun] | 41 |
|
