You are given a code:

def main_solution(x):
    return (func_15('iugsr') + func_5('ztllk', 'qf'))

Can you predict the output of `main_solution("ndsoylzqji")` 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": "ndsoylzqji"}, "ref_output": "\u00abi\u00bb\u00abu\u00bb\u00abg\u00bb\u00abs\u00bb\u00abr\u00bbqfztllk", "ref_code": "def main_solution(x):\n    return (func_15('iugsr') + func_5('ztllk', 'qf'))", "funcname": "main_solution"}
rule