Task: Program Execution
Input (English): rLqPcqKHdBYiuUCQOqaPLyjTdpI, iLDCkzjcEQmfciuUCQOqaPLyjTNEOtFPZWqQiE
Output (English): a, c, d, e, f, i, j, k, l, m, n, o, p, q, t, u, w, y, z