| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not been able [verb] | 474 |
|
| 2 | been able [verb] [noun sg] | 95 |
|
| 3 | not been [verb] [noun sg] | 47 |
|
| 4 | not able [verb] [noun sg] | 19 |
|
