| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [been] [verb] at | 699 |
|
| 2 | had [been] [verb] [det] | 356 |
|
| 3 | [been] [verb] at [det] | 224 |
|
| 4 | had [verb] at [det] | 79 |
|
| 5 | had [been] at [det] | 13 |
|
