| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [verb] [prep] a | 1700 |
|
| 2 | it had been [verb] [prep] | 707 |
|
| 3 | it had [verb] [prep] a | 90 |
|
| 4 | it had been [prep] a | 21 |
|
| 5 | it had been [verb] a | 14 |
|
