You are given a code:

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

Can you predict the output of `main_solution("jdwyfrlvng")` 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": "jdwyfrlvng"}, "ref_output": "\u00abzj|\u00bbb\u00ab|du\u00bb|\u00abuw\u00bb\u00aby\u00bb\u00abf\u00bb\u00abr\u00bb\u00abl\u00bb\u00abv\u00bb\u00abn\u00bb\u00abg\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_13('zbuu', '|'))", "funcname": "main_solution"}
rule