| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to [be] able [to-vb] [prep] | 500 |
|
| 2 | [vb -s] to [be] able [to-vb] | 136 |
|
| 3 | [vb -s] [be] able [to-vb] [prep] | 43 |
|
| 4 | [vb -s] to [be] [to-vb] [prep] | 9 |
|
