| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be often able [to-vb] | 28 |
|
| 2 | are often able [to-vb] | 11 |
|
| 3 | were often able [to-vb] | 7 |
|
| 4 | is often able [to-vb] | 6 |
|
