You are given a code:

def main_solution(x):
    return func_20(func_22(x), func_15(x))

Can you predict the output of `main_solution("ghvkizsy")` 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": "ghvkizsy"}, "ref_output": "g\u00abhgv\u00bbk\u00abihz\u00bbs\u00abyv\u00bb\u00abk\u00bb\u00abi\u00bb\u00abz\u00bb\u00abs\u00bb\u00aby\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_22(x), func_15(x))", "funcname": "main_solution"}
rule