Task: Program Execution
Input (English): d i t 719 5815 g d 67 6931 7981 2151 2767 6403 2121 117 5049 4191 9357 1899 5107 z g 2579 t q 5923 x 2927 y k a
Output (English): a, d, g, i, k, q, t, x, y, z