You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_1('mssbum', 2))

Can you predict the output of `main_solution("qsovuxraqe")` 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": "qsovuxraqe"}, "ref_output": "\u00abmqs\u00bbs\u00abbsu\u00bbm\u00abmos\u00bbs\u00abbvu\u00bbm\u00abu\u00bb\u00abx\u00bb\u00abr\u00bb\u00aba\u00bb\u00abq\u00bb\u00abe\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_1('mssbum', 2))", "funcname": "main_solution"}
rule