You are given a code:

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

Can you predict the output of `main_solution("ospgf")` 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": "ospgf"}, "ref_output": "b\u00abctw\u00bbw\u00abuoi\u00bb1\u00abg\u00bb\u00abk\u00bb\u00abu\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_23('bcwwui', 2), func_15('togku'))", "funcname": "main_solution"}
rule