| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] had [been] [vb pp] | 2035 |
|
| 2 | [Wh det] had [vb pp] [art] | 821 |
|
| 3 | had [been] [vb pp] [art] | 671 |
|
| 4 | [Wh det] had [been] [art] | 217 |
|
