You are given a code:

def main_solution(x):
    return func_20(func_15('yvewm'), func_15('jtodhr'))

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": "\u00ab\u00abyj\u00bb\u00bb\u00ab\u00abvt\u00bb\u00bb\u00ab\u00abeo\u00bb\u00bb\u00ab\u00abwd\u00bb\u00bb\u00ab\u00abmh\u00bb\u00bb\u00abr\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('yvewm'), func_15('jtodhr'))", "funcname": "main_solution"}
rule