| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [adv] [verb] whether [to-vb] | 6 |
|
| 2 | had not [verb] whether [to-vb] | 5 |
|
| 3 | had [not/n't] [verb] whether [to-vb] | 5 |
|
