Task: Program Execution
Input (English): 7, 21, ['b', 'Q', 'W', '4281', 'l', '6357', '2073', '123', 'c', 'P', 'K', 'T', '355', 'O', '4045', '3067', '3985', '3669', 'u', '8583', '5623', '7961', '4865', '1309', 'u']
Output (English): 5623, 8583, u, 3669, 3985, 3067, 4045, O, 355, T, K, P, c, 123, 2073