Task: Program Execution
Input (English): 18, 25, ['t', '5461', 'k', '9239', 'x', 'A', 'e', '447', '9565', '5455', '6397', '2405', 'b', '691', '3977', '519', '1507', 'B', '2051', 'k', 'E', 'M', '1955', '1441', '6303', 'N']
Output (English): 630314411955MEk2051B