You are given a code:

def main_solution(x):
    return func_20(func_13('vcjva', '-'), func_15('bwhtx'))

Can you predict the output of `main_solution("hzboxzhhc")` 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": "hzboxzhhc"}, "ref_output": "v\u00ab-bc\u00bb-\u00abjw-\u00bbv\u00ab-ha\u00bb\u00abt\u00bb\u00abx\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_13('vcjva', '-'), func_15('bwhtx'))", "funcname": "main_solution"}
rule