| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but he [verb] not be able | 9 |
|
| 2 | but he have not be able | 9 |
|
| 3 | but he [verb] not been able | 9 |
|
| 4 | but he [verb] not be able | 6 |
|
| 5 | but he had not be able | 5 |
|
| 6 | but he [vb past] not be able | 5 |
|
