| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not [verb] be able | 126 |
|
| 2 | not [verb] been able | 125 |
|
| 3 | not have [be] able | 125 |
|
| 4 | not [verb] [been] able | 125 |
|
| 5 | not [vb infin] [be] able | 122 |
|
| 6 | not have [be] able | 121 |
|
| 7 | not [verb] [be] able | 89 |
|
| 8 | n't [verb] [be] able | 37 |
|
