You are given a code:

def main_solution(x):
    return func_20(func_11('okldh', 5), func_15('oywbd'))

Can you predict the output of `main_solution("evijvuz")` 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": "evijvuz"}, "ref_output": "t\u00abpoq\u00bbi\u00abmy\u00bb\u00abw\u00bb\u00abb\u00bb\u00abd\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_11('okldh', 5), func_15('oywbd'))", "funcname": "main_solution"}
rule