You are given a code:

def main_solution(x):
    return func_20(func_5(x, 'wgnw'), func_15(x))

Can you predict the output of `main_solution("eatobrai")` 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": "eatobrai"}, "ref_output": "w\u00abgen\u00bbw\u00abeaa\u00bbt\u00abotb\u00bbr\u00abaoi\u00bb\u00abb\u00bb\u00abr\u00bb\u00aba\u00bb\u00abi\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_5(x, 'wgnw'), func_15(x))", "funcname": "main_solution"}
rule