Task: Program Execution
Input (English): PxWxaUqQuaciFoOExRmLDyVKFDwRvdlAObiz, IKShGUVCxvhfaciFoOExRmLDyVGNOFYoEKOQzPA
Output (English): a, c, d, e, f, g, h, i, k, l, m, n, o, p, q, r, s, u, v, x, y, z