| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] have shown a | 133 |
|
| 2 | [noun sg] have shown a | 50 |
|
| 3 | study have shown a | 15 |
|
| 4 | study have [verb] a | 13 |
|
| 5 | study have [vb pp] a | 12 |
|
| 6 | study have shown [art] | 5 |
|
| 7 | study have show a | 5 |
|
| 8 | study have shown a | 5 |
|
| 9 | study [verb] shown a | 5 |
|
| 10 | study have shown [art] | 5 |
|
