| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [verb] a [adj] study | 14 |
|
| 2 | has [verb] a [adj] study | 14 |
|
| 3 | has [vb pp] [art] [adj] study | 14 |
|
| 4 | has [verb] [art] [adj] study | 14 |
|
| 5 | has made [art] [adj] study | 11 |
|
| 6 | has make [art] [adj] study | 11 |
|
