| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [been] [verb] | 37993 |
|
| 2 | had [verb] [det] | 5623 |
|
| 3 | [been] [verb] [det] | 1812 |
|
| 4 | had [been] [det] | 529 |
|
