| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] have been [vb pp] to a | 31 |
|
| 2 | [noun pl] had been [vb pp] to a | 20 |
|
| 3 | [noun pl] have been reduced to a | 7 |
|
| 4 | [noun pl] has been [vb pp] to a | 5 |
|
