You are given a code:

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

Can you predict the output of `main_solution("oquhdm")` 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": "oquhdm"}, "ref_output": "\u00abbr|\u00bbi\u00ab|bb\u00bb|\u00abui|\u00bbi\u00abn\u00bb\u00abw\u00bb\u00abr\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('rbinwr'), func_13('bibui', '|'))", "funcname": "main_solution"}
rule