You are given a code:

def main_solution(x):
    return ('rku' + 'kymd')

Can you predict the output of `main_solution("hkjqm")` 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": "hkjqm"}, "ref_output": "rkukymd", "ref_code": "def main_solution(x):\n    return ('rku' + 'kymd')", "funcname": "main_solution"}
rule