You are given a code:

def main_solution(x):
    return func_20(func_19('irwwy', 1), func_15('lwim'))

Can you predict the output of `main_solution("xyd")` 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": "xyd"}, "ref_output": "r\u00abwlw\u00bby\u00abiw\u00bb\u00abi\u00bb\u00abm\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_19('irwwy', 1), func_15('lwim'))", "funcname": "main_solution"}
rule