You are given a code:

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

Can you predict the output of `main_solution("tisezozz")` 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": "tisezozz"}, "ref_output": "t\u00absti\u00bbo\u00absii\u00bbe\u00abisz\u00bbm\u00aboez\u00bbz\u00abz\u00bb\u00abo\u00bb\u00abz\u00bb\u00abz\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_20(x, 'soiim'), func_15(x))", "funcname": "main_solution"}
rule