You are given a code:

def main_solution(x):
    return func_5(func_13(x, '|'), 'wwat')

Can you predict the output of `main_solution("hptganlnu")` 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": "hptganlnu"}, "ref_output": "wwath|p|t|g|a|n|l|n|u", "ref_code": "def main_solution(x):\n    return func_5(func_13(x, '|'), 'wwat')", "funcname": "main_solution"}
rule