You are given a code:

def main_solution(x):
    return (func_13('srbnnz', '|') + func_13('ntvkoy', '-'))

Can you predict the output of `main_solution("hatfb")` 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": "hatfb"}, "ref_output": "s|r|b|n|n|zn-t-v-k-o-y", "ref_code": "def main_solution(x):\n    return (func_13('srbnnz', '|') + func_13('ntvkoy', '-'))", "funcname": "main_solution"}
rule