Task: Program Execution
Input (English): 1653, 4461, 1505, e, 377, v, 3443, 55, 3507, y, 3391, 8643, m, 2881, 3037, q, a, p, f, 9043, w, 9999
Output (English): a, e, f, m, p, q, v, w, y