You are given a code:

def main_solution(x):
    return func_13(func_9('pogumn'), '|')

Can you predict the output of `main_solution("rhujt")` 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": "rhujt"}, "ref_output": "p|o|g|u|m|n|n|m|u|g|o|p", "ref_code": "def main_solution(x):\n    return func_13(func_9('pogumn'), '|')", "funcname": "main_solution"}
rule