| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [been] [vb pp] | 31868 |
|
| 2 | [been] officially [vb pp] | 76 |
|
| 3 | had officially [vb pp] | 21 |
|
| 4 | had [been] officially | 19 |
|
