| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] been [prep] [adj] [noun] a | 7 |
|
| 2 | [vb past] been [prep] [det] [noun] a | 6 |
|
| 3 | [vb past] been [prep] [adj] [noun] a | 6 |
|
| 4 | had been [prep] [adj] [noun] a | 5 |
|
