| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [not/n't] [vb pp] at the | 18 |
|
| 2 | had not [verb] at the | 14 |
|
| 3 | had [not/n't] looked at the | 5 |
|
| 4 | had [not/n't] look at the | 5 |
|
