| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [vb pp] at the [noun prp] [noun] | 23 |
|
| 2 | had [vb pp] at the [noun prp] [noun sg] | 16 |
|
| 3 | had [vb pp] at the [noun prp] [noun prp] | 6 |
|
| 4 | had worked at the [noun prp] [noun] | 5 |
|
