| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [to-vb] the [adj] problem | 21 |
|
| 2 | [vb pp] [to-vb] the [adj] problem | 17 |
|
| 3 | [vb pp] [to-vb] the [adj] problems | 8 |
|
