| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] be able | 1640 |
|
| 2 | [not/n't] be [prep] | 1229 |
|
| 3 | be able [prep] | 508 |
|
| 4 | [not/n't] able [prep] | 28 |
|
