| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] had been [verb] [prep] | 1405 |
|
| 2 | had previously been [verb] [prep] | 92 |
|
| 3 | [Wh det] had previously been [verb] | 37 |
|
| 4 | [Wh det] had previously [verb] [prep] | 6 |
|
