Task: Program Execution
Input (English): rMHfzQDzBiERgbHUoGmvwVNFAGj, UdZgVxHfzQDzBiERgbHUhQCkc
Output (English): a, b, d, e, f, g, h, i, j, m, n, o, q, r, u, v, w, z