Task: Program Execution
Input (English): wrkimCdCnEELHCOTmVSRXRfZpeDgG, QSQaoTdIhHaLHCOTmVSRXRfoMxI
Output (English): c, d, e, f, g, h, i, k, l, m, n, o, p, r, s, t, v, w, x, z