| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] effort [to-vb] | 325 |
|
| 2 | [vb pp] a [adj] effort | 37 |
|
| 3 | [vb pp] [adj] effort [to-vb] | 15 |
|
| 4 | [vb pp] a [adj] [to-vb] | 8 |
|
