Task: Program Execution
Input (English): rcxhLWVMVqWWpnpxitMIXXYWhNeddvPzWqAtqNO, WNSxitMIXXYWhNeddvMmzaaWnoyzVdH
Output (English): a, c, d, e, h, i, l, m, n, o, p, q, r, t, v, w, x, y, z