You are given a code:

def main_solution(x):
    return (func_22('epmoy') + func_20('ube', x))

Can you predict the output of `main_solution("galmgmxefu")` 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": "galmgmxefu"}, "ref_output": "epmougbaelmgmxefu", "ref_code": "def main_solution(x):\n    return (func_22('epmoy') + func_20('ube', x))", "funcname": "main_solution"}
rule