You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_20('fih', x))

Can you predict the output of `main_solution("lbanjmqyk")` 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": "lbanjmqyk"}, "ref_output": "\u00abfll\u00bbi\u00abbbh\u00bba\u00abnaj\u00bbm\u00abqny\u00bbk\u00abj\u00bb\u00abm\u00bb\u00abq\u00bb\u00aby\u00bb\u00abk\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_20('fih', x))", "funcname": "main_solution"}
rule