You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_5(x, 'hxp'))

Can you predict the output of `main_solution("pybjrrcz")` 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": "pybjrrcz"}, "ref_output": "\u00abhpx\u00bbp\u00abpyy\u00bbb\u00abjbr\u00bbr\u00abcjz\u00bb\u00abr\u00bb\u00abr\u00bb\u00abc\u00bb\u00abz\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_5(x, 'hxp'))", "funcname": "main_solution"}
rule