You are given a code:

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

Can you predict the output of `main_solution("ugi")` 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": "ugi"}, "ref_output": "gupgoihfu\u00abv\u00bb\u00abe\u00bb\u00abf\u00bb\u00abe\u00bb\u00abu\u00bb\u00abk\u00bb", "ref_code": "def main_solution(x):\n    return (func_20('gpohfu', x) + func_15('vefeuk'))", "funcname": "main_solution"}
rule