Task: Program Execution
Input (English): gSxtfhUuTVavfMTUpZhUNQgUeMtLbCXwCjZh, RejcGhTUpZhUNQgUeMtLbkXPbhOoEbvwH
Output (English): a, b, c, e, f, g, h, j, l, m, n, p, q, s, t, u, v, w, x, z