Task: Program Execution
Input (English): XMNIFGknXucgXZexIJeLhyASMdLRPDPLtG, rbsNCnHMQbZcgXZexIJeLhyASjJrO
Output (English): a, c, d, e, f, g, h, i, j, k, l, m, n, p, r, s, t, u, x, y, z