| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] be able [to-vb] [conj] [verb] | 30 |
|
| 2 | [verb] [be] able [to-vb] [conj] [verb] | 30 |
|
| 3 | [verb] [been] able [to-vb] [conj] [verb] | 28 |
|
| 4 | [verb] been able [to-vb] [conj] [verb] | 28 |
|
