Task: Program Execution
Input (English): rgzjpgTSACfhxGeUATChE, aLkpzjpgTSACfhxGeUAwxJOaMkmzbUytQA
Output (English): a, b, c, e, f, g, h, j, k, l, m, o, p, q, s, t, u, w, x, y, z