The common element between Set 1 and Set 2 is {3}.
Set 1: {1,2,3,4,5,6}
Set 2: {3,7,8,9}
### Instruction:
Find the common elements between two sets.

### Input:
Set 1: {1,2,3,4,5,6}
Set 2: {3,7,8,9}

### Response:
