You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_23('debhp', 2))

Can you predict the output of `main_solution("vppec")` 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": "vppec"}, "ref_output": "\u00abdve\u00bbb\u00abhpp\u00bb1\u00abp\u00bb\u00abe\u00bb\u00abc\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_23('debhp', 2))", "funcname": "main_solution"}
rule