Task: Program Execution
Input (English): 1, 8, ['r', 'i', 'L', '771', '1265', '5059', '3037', '4151', '2621', '5841', '5971', '5913', 'z', 'Y', '6411', '703', '4995', '7309', '5305', 'D']
Output (English): r, 2621, 4995