Task: Program Execution
Input (English): 13, 15, ['3747', 'W', 'G', '1375', 'a', '3305', '8369', 'v', '9747', 'k', '5309', 'r', 'a', '8223', 't', '5401', '6563', 'b', 'Y']
Output (English): t, 8223, a