You are given a code:

def main_solution(x):
    return (func_23('evvhj', 3) + func_13(x, '|'))

Can you predict the output of `main_solution("futszudpjq")` 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": "futszudpjq"}, "ref_output": "evvhj1f|u|t|s|z|u|d|p|j|q", "ref_code": "def main_solution(x):\n    return (func_23('evvhj', 3) + func_13(x, '|'))", "funcname": "main_solution"}
rule