Task: Program Execution
Input (English): 5253, 4551, 955, t, h, 2845, c, 1691, 1431, u, 7435, t, s, 2641, x, 6421, l, f, 2241, 6911, m, 2093, 6983
Output (English): c, f, h, l, m, s, t, u, x