You are given a code:

def main_solution(x):
    return func_20(func_15('wodab'), func_20(x, x))

Can you predict the output of `main_solution("cruhrngvf")` 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": "cruhrngvf"}, "ref_output": "\u00abcwc\u00bbr\u00abrou\u00bbu\u00abhdh\u00bbr\u00abran\u00bbn\u00abgbg\u00bbvvff", "ref_code": "def main_solution(x):\n    return func_20(func_15('wodab'), func_20(x, x))", "funcname": "main_solution"}
rule