Task: Program Execution
Input (English): GpvkVplVgDcTKQCpBXAvpJCghloqcBKMkyuk, vrkScTKQCpBXAvpJCIRPwA
Output (English): a, b, c, d, g, h, j, k, l, m, o, p, q, t, u, v, x, y