| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not be able | 1477 |
|
| 2 | not be able | 925 |
|
| 3 | not [be] able | 925 |
|
| 4 | not been able | 278 |
|
| 5 | not [been] able | 278 |
|
| 6 | not [being] able | 276 |
|
| 7 | not being able | 274 |
|
