| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it had been [vb pp] [prep] | 665 |
|
| 2 | had been [vb pp] [prep] [det] | 600 |
|
| 3 | it had [vb pp] [prep] [det] | 44 |
|
| 4 | it had been [prep] [det] | 15 |
|
| 5 | it had been [vb pp] [det] | 12 |
|
