You are given a code:

def main_solution(x):
    return ('jdhj' + 'fpgj')

Can you predict the output of `main_solution("eoztplrh")` 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": "eoztplrh"}, "ref_output": "jdhjfpgj", "ref_code": "def main_solution(x):\n    return ('jdhj' + 'fpgj')", "funcname": "main_solution"}
rule