You are given a code:

def main_solution(x):
    return (func_13(x, '-') + func_17('fsbndn'))

Can you predict the output of `main_solution("akqczsxbg")` 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": "akqczsxbg"}, "ref_output": "a-k-q-c-z-s-x-b-gndnbsf", "ref_code": "def main_solution(x):\n    return (func_13(x, '-') + func_17('fsbndn'))", "funcname": "main_solution"}
rule