You are given a code:

def main_solution(x):
    return func_20(func_15('xgrsis'), (x + 'getdmi'))

Can you predict the output of `main_solution("kntdszlu")` 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": "kntdszlu"}, "ref_output": "\u00abkxn\u00bbt\u00abdgs\u00bbz\u00ablru\u00bbg\u00abest\u00bbd\u00abmii\u00bb\u00abs\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('xgrsis'), (x + 'getdmi'))", "funcname": "main_solution"}
rule