Task: Program Execution
Input (English): BysApGaZHDAygUpTfIxNHPtzx, VxcfrmfZZHDAygUpTfIxNHPcHSEuwzwoumzxc
Output (English): a, c, d, e, f, g, h, i, m, n, o, p, r, s, t, u, v, w, x, y, z