| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] of [art] problems that [vb mod] | 6 |
|
| 2 | of [art] problems that [vb mod] [vb infin] | 5 |
|
| 3 | of [art] problems that [vb mod] [verb] | 5 |
|
