Task: Program Execution
Input (English): 11, 18, ['z', 'C', '9907', '8851', 'c', '6661', 'U', '8727', 'h', '9503', 'k', 's', '5447', 'N', 'Z', 'R', '5789', 'n', '1473', 'a', '4019', '4335', '6687', '3379', '5745', '5815']
Output (English): ks5447NZR5789n