| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] [det] problem | 148 |
|
| 2 | [modal v] [verb] [det] problem | 148 |
|
| 3 | [modal v] [verb] [vb infin] [det] | 80 |
|
| 4 | [verb] [vb infin] [det] problem | 22 |
|
| 5 | [modal v] [verb] [vb infin] problem | 5 |
|
