| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] be able [verb] a | 216 |
|
| 2 | [prep] be able [verb] [adv] | 215 |
|
| 3 | [prep] be [verb] [adv] a | 37 |
|
| 4 | be able [verb] [adv] a | 19 |
|
