You are given a code:

def main_solution(x):
    return func_20(func_9('lrgww'), func_15('rkxkyy'))

Can you predict the output of `main_solution("kqbzvpb")` 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": "kqbzvpb"}, "ref_output": "l\u00abrrg\u00bbw\u00abwkw\u00bbw\u00abgxr\u00bbl\u00abk\u00bb\u00aby\u00bb\u00aby\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_9('lrgww'), func_15('rkxkyy'))", "funcname": "main_solution"}
rule