You are given a code:

def main_solution(x):
    return func_20('mrmo', 'mmtpjd')

Can you predict the output of `main_solution("oabsd")` 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": "oabsd"}, "ref_output": "mmrmmtopjd", "ref_code": "def main_solution(x):\n    return func_20('mrmo', 'mmtpjd')", "funcname": "main_solution"}
rule