Task: Program Execution
Input (English): UIDuJEJcSjnIdcqGRpVhNzJTrLEFyWaptAIh, KGkyzpujJQhPzscqGRpVhNzJTrLEFpcg
Output (English): a, c, d, e, f, g, h, i, j, l, n, p, q, r, s, t, u, v, w, y, z