| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] able [to-vb] a [adj] | 50 |
|
| 2 | has [been] able [to-vb] a | 20 |
|
| 3 | has [been] [to-vb] a [adj] | 17 |
|
| 4 | has [been] able [to-vb] [adj] | 10 |
|
