| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [be] able | 1640 |
|
| 2 | [be] able to | 489 |
|
| 3 | [not/n't] [be] to | 30 |
|
| 4 | [not/n't] able to | 24 |
|
