| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [verb] [verb] a | 25907 |
|
| 2 | [pron] [verb] a problem | 293 |
|
| 3 | [verb] [verb] a problem | 197 |
|
| 4 | [pron] [verb] [verb] problem | 121 |
|
