Generating Permutations and Combinations

Hi Forum,

Need help to generate Series of Items in different Permuation & Combinations..

For Ex:- If there are three Items.. A B C and forming a group of 2
then the the total no of combinations would be permut(3,1) = 6...

I need this to be shown as follows depending on the no of itmes and no of group no=2 in this case...

Permuations & Combinations are as follows:

AB
AC
BC
CA
CB
BA