Task: Program Execution
Input (English): 22, 23, ['7953', '4679', 'R', 'r', '9459', 'j', 'P', 'q', 'z', '7801', 'Y', 'a', 'r', 'V', '3583', '7621', 's', '8385', '8295', 'G', 'o', '4503', 'Z']
Output (English): 4503Z