Task: Program Execution
Input (English): WtxVchjwsYmSVZvMAHqQmSQfdagIZB, QTHEBXhmVZvMAHqQmSQfdaPkuGzJhYKeUAyR
Output (English): a, b, d, e, f, g, h, j, k, m, p, q, r, s, t, u, v, x, y, z