Task: Program Execution
Input (English): 9, 17, ['X', 'S', 'g', 'k', '8515', '4717', 'H', '487', 'L', '9233', 'B', '6427', '2783', '7353', '9029', 'x', 'C', 'D', 'B', '5585']
Output (English): Cx9029735327836427B9233L