| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] problems that [verb] [prep] | 15 |
|
| 2 | [adj] problems that [verb] [prep] | 13 |
|
| 3 | [adj] problems that [vb base] [prep] | 12 |
|
| 4 | [adj] problems that [verb] to | 5 |
|
