| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] a dual role | 17 |
|
| 2 | have a dual role | 13 |
|
| 3 | [vb -s] a dual role | 7 |
|
| 4 | has a dual role | 6 |
|
| 5 | [vb base] a dual role | 5 |
|
| 6 | a dual role [prep] | 7 |
|
| 7 | a dual role [prep] | 7 |
|
