Task: Program Execution
Input (English): 2, 15, ['H', '7099', '6135', '6593', 'x', '7747', '8613', 'e', 'i', '5639', '9619', '5959', 'U', 'P', '1037', 'L', 'Z', 'j', '8555']
Output (English): 1037PU595996195639ie86137747x659361357099