| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [be] able [verb] a | 411 |
|
| 2 | [modal v] [be] able [verb] a | 411 |
|
| 3 | must [be] able [verb] [art] | 52 |
|
| 4 | must [be] able [verb] [art] | 52 |
|
| 5 | must [be] [adj] [verb] a | 34 |
|
| 6 | must [be] able [verb] a | 13 |
|
| 7 | must [be] able [verb] a | 11 |
|
| 8 | must [be] able [verb] a | 11 |
|
