Task: Program Execution
Input (English): 9, 21, ['5739', '8137', 'J', '5841', '671', '3389', 'm', 'j', 'W', '4955', 'p', '5575', 'j', 'p', '2421', 'C', '4233', '8809', '4375', '5303', 'X', '357']
Output (English): X5303437588094233C2421pj5575p4955W