| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] problems [pron] | 404 |
|
| 2 | [det] [art] [pron] | 198 |
|
| 3 | [det] [art] problems | 147 |
|
| 4 | [det] problems [pron] | 110 |
|
