Task: Program Execution
Input (English): mcOwHWVLBBkkZijxljImQHENqOxBkPeuuxdddTEc, IFjYbugkZijxljImQHENqORHiHqmb
Output (English): b, c, d, e, h, i, j, k, l, m, n, o, p, q, t, u, v, w, x, z