| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] had been [verb] | 3311 |
|
| 2 | [noun prp] had [verb] a | 1595 |
|
| 3 | had been [verb] a | 570 |
|
| 4 | [noun prp] had been a | 276 |
|
