Task: Program Execution
Input (English): 21, 22, ['4275', 'y', 'j', '3381', 'g', '315', 'L', '4609', 'f', '929', '2967', 'v', 'P', 'I', '961', '2749', 'k', '6423', '4115', '7521', '389', 'v']
Output (English): 389v