| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [vb mod] to be able | 7 |
|
| 2 | [adv] [vb mod] to [be] able | 7 |
|
| 3 | [adv] [vb mod] to be able | 7 |
|
| 4 | [adv] used to [be] able | 5 |
|
