You are given a code:

def main_solution(x):
    return func_13(func_20(x, 'kepneo'), '-')

Can you predict the output of `main_solution("bemaj")` 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": "bemaj"}, "ref_output": "b-k-e-e-m-p-a-n-j-e-o", "ref_code": "def main_solution(x):\n    return func_13(func_20(x, 'kepneo'), '-')", "funcname": "main_solution"}
rule