You are given a code:

def main_solution(x):
    return ('qpckqp' + 'blv')

Can you predict the output of `main_solution("jjhurxknmk")` without writing any code? Please reason and put your final answer in the following json format: {"output": <your output>}, where <your output> should be the final string.
user
{"ref_input": {"x": "jjhurxknmk"}, "ref_output": "qpckqpblv", "ref_code": "def main_solution(x):\n    return ('qpckqp' + 'blv')", "funcname": "main_solution"}
rule