Task: Program Execution
Input (English): niRKnJEkaYbylSlAqcJJwTWYGpePdnFly, ncJxOPWxikaYbylSlAqcJJwDAYSJoYBgFp
Output (English): a, b, c, d, f, g, i, j, k, l, n, o, p, q, s, w, x, y