Task: Program Execution
Input (English): OKskqGwrYeZDOGdhkXwYlokCj, DbBStjqiyeZDOGdhkXwanJstLJNpU
Output (English): a, b, d, e, g, h, i, j, k, l, n, o, p, q, s, t, u, w, x, y, z