You are given a code:

def main_solution(x):
    return func_20(('ubum' + x), func_15(x))

Can you predict the output of `main_solution("soslgug")` 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": "soslgug"}, "ref_output": "u\u00abbsu\u00bbm\u00absoo\u00bbs\u00ablsg\u00bbu\u00abgl\u00bb\u00abg\u00bb\u00abu\u00bb\u00abg\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('ubum' + x), func_15(x))", "funcname": "main_solution"}
rule