You are given a code:

def main_solution(x):
    return func_20(func_20('qlbkj', 'hctq'), func_20('licp', x))

Can you predict the output of `main_solution("hnjub")` 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": "hnjub"}, "ref_output": "qlhhlicnbctjkpqujb", "ref_code": "def main_solution(x):\n    return func_20(func_20('qlbkj', 'hctq'), func_20('licp', x))", "funcname": "main_solution"}
rule