Task: Program Execution
Input (English): 2, 4, ['K', 'Z', 'b', '6475', '4059', '7143', '2303', '1777', 'Z', '3895', 'p', 'M', '37', 'c', '7341', 'f', 'f', 'q', '6587', '9215', '4239']
Output (English): 6475bZ