Task: Program Execution
Input (English): 6, 12, ['G', 'f', 'H', 'i', '3147', 'I', 'U', '2507', 'I', '9727', '7689', 'f', 'a', '3447', 'X', 'L', '5981', '2303', 'D', 'B', '4259']
Output (English): f, 7689, 9727, I, 2507, U, I