You are given a code:

def main_solution(x):
    return func_20(func_5('ddll', 'kkq'), func_5(x, 'niki'))

Can you predict the output of `main_solution("krrsfnayh")` 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": "krrsfnayh"}, "ref_output": "knkiqkdidklrlrsfnayh", "ref_code": "def main_solution(x):\n    return func_20(func_5('ddll', 'kkq'), func_5(x, 'niki'))", "funcname": "main_solution"}
rule