| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [not/n't] be able | 189 |
|
| 2 | [not/n't] be able to | 121 |
|
| 3 | had [not/n't] be to | 44 |
|
| 4 | had be able to | 7 |
|
