| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and economic [noun] | 2236 |
|
| 2 | and economic [noun sg] | 1295 |
|
| 3 | and [adj] research | 492 |
|
| 4 | and economic research | 12 |
|
| 5 | [conj] economic research | 12 |
|
