Task: Program Execution
Input (English): c u 1713 x 4433 y z 9515 r h a 905 6179 r c 7593 t 8833 n j j 7403 4145 2307 9731 5329 u 405 d k l o i a w 9173 3767 3967 m q h
Output (English): a, c, d, h, i, j, k, l, m, n, o, q, r, t, u, w, x, y, z