| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [be] [vb pp] [prep] [be] able | 5 |
|
| 2 | [modal v] [be] [vb pp] [prep] [be] able | 5 |
|
| 3 | [be] [vb pp] [prep] [be] able [to-vb] | 7 |
|
| 4 | [be] [vb pp] [prep] [be] able [verb] | 7 |
|
