| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] have been a | 504 |
|
| 2 | [noun prp] had been a | 334 |
|
| 3 | [noun prp] has been a | 223 |
|
| 4 | [noun prp] have been an | 90 |
|
| 5 | [noun prp] 's been a | 12 |
|
| 6 | [noun prp] have been a | 12 |
|
| 7 | [noun prp] to have been a | 6 |
|
| 8 | britain have been a | 5 |
|
| 9 | ireland have been a | 5 |
|
| 10 | america have been a | 5 |
|
