Task: Program Execution
Input (English): auknEGMCusLMPwpeqykefKHIsLjxJikVZHXzFG, DsQxLEiaGlgpeqykefKHIsLjxJfpXDrc
Output (English): a, c, e, f, g, h, i, j, k, l, m, n, p, q, s, u, v, w, x, y, z