Task: Program Execution
Input (English): AYWxQyxPQSALwwIBlQcidFUUwZiJoYU, mRPQSALwwIBlQcidFYUIBCZLCqLEpc
Output (English): a, b, c, d, f, i, j, l, o, p, q, s, u, w, x, y, z