You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_13('sddv', '|'))

Can you predict the output of `main_solution("ufabq")` 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": "ufabq"}, "ref_output": "\u00absu|\u00bbd\u00ab|fd\u00bb|\u00abva\u00bb\u00abb\u00bb\u00abq\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_13('sddv', '|'))", "funcname": "main_solution"}
rule