| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [vb infin] [det] | 1872 |
|
| 2 | [verb] [det] problem | 1610 |
|
| 3 | [vb infin] [det] problem | 358 |
|
| 4 | [verb] [vb infin] problem | 40 |
|
