| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been an [noun sg] [prep] [noun pl] | 15 |
|
| 2 | have been an [noun] of [noun pl] | 9 |
|
| 3 | has been an [noun] [prep] [noun pl] | 7 |
|
| 4 | had been an [noun] [prep] [noun pl] | 5 |
|
