Task: Program Execution
Input (English): 8, ['687', '1313', 'e', '5613', '283', 'O', 'b', 'O', 'D', 'B', 'A', '7463', 'B', 'U', '993', '629', '6033', '4419', 'V', '9399']
Output (English): D, B, A, 7463, B, U, 993, 629, 6033, 4419, V, 9399