| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] problems [prep] | 869 |
|
| 2 | [adj] [prep] [art] problems | 770 |
|
| 3 | [adj] [prep] [art] [prep] | 134 |
|
| 4 | [adj] [art] problems [prep] | 60 |
|
| 5 | [adj] [prep] problems [prep] | 49 |
|
