You are given a code:

def main_solution(x):
    return ('twdetd' + 'jyqs')

Can you predict the output of `main_solution("xdjpupln")` 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": "xdjpupln"}, "ref_output": "twdetdjyqs", "ref_code": "def main_solution(x):\n    return ('twdetd' + 'jyqs')", "funcname": "main_solution"}
rule