| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] n't been [prep] | 439 |
|
| 2 | [verb] n't been able | 226 |
|
| 3 | [verb] been able [prep] | 49 |
|
| 4 | n't been able [prep] | 13 |
|
