Task: Program Execution
Input (English): 4843 1403 9983 9043 z f q 8721 6567 r n n v 6509 3 k c 5725 w r 1483 8209 a y w 9927 x n x 1225 7453 g n m 7607 7459 r 3855 5753 t y 9159 z 6553 c
Output (English): a, c, f, g, k, m, n, q, r, t, v, w, x, y, z