You are given a code:

def main_solution(x):
    return (func_13('wnbo', '|') + func_13('ejtnas', '|'))

Can you predict the output of `main_solution("gth")` 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": "gth"}, "ref_output": "w|n|b|oe|j|t|n|a|s", "ref_code": "def main_solution(x):\n    return (func_13('wnbo', '|') + func_13('ejtnas', '|'))", "funcname": "main_solution"}
rule