| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | on [noun] and [noun sg] | 2958 |
|
| 2 | [prep] research and [noun sg] | 358 |
|
| 3 | on research and [noun] | 56 |
|
| 4 | on research [coord] [noun sg] | 55 |
|
| 5 | on research [conj] [noun sg] | 55 |
|
| 6 | on research and [noun sg] | 54 |
|
