Task: Program Execution
Input (English): BrOAJXdAHEdtCmsvIkWrvWrDUagcBehc, wChkJjLEQHEdtCmsvIkWrvWgeNazyjfjvCETj
Output (English): a, c, d, e, f, g, h, i, j, k, l, m, n, q, r, s, t, v, w, y, z