You are given a code:

def main_solution(x):
    return func_20(func_20('xcea', 'iecfh'), func_13('axqr', '|'))

Can you predict the output of `main_solution("mulhhh")` 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": "mulhhh"}, "ref_output": "xai|cxe|eqc|arfh", "ref_code": "def main_solution(x):\n    return func_20(func_20('xcea', 'iecfh'), func_13('axqr', '|'))", "funcname": "main_solution"}
rule