Task: Program Execution
Input (English): OHPWyWkJqmCRGpvjKbMMnSSqQ, GHYTVVjoWIykJqmCRGpvjKmAxodorpQJ
Output (English): a, c, d, g, h, i, j, k, m, o, p, q, r, t, v, w, x, y