| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | he have n't been able | 27 |
|
| 2 | he [verb] n't been able | 27 |
|
| 3 | he had n't been able | 18 |
|
| 4 | he [vb past] n't been able | 18 |
|
| 5 | he [vb -s] n't been able | 9 |
|
| 6 | he has n't been able | 9 |
|
