You are given a code:

def main_solution(x):
    return (func_13('jzroe', '|') + func_20(x, 'svtu'))

Can you predict the output of `main_solution("syzt")` 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": "syzt"}, "ref_output": "j|z|r|o|essyvzttu", "ref_code": "def main_solution(x):\n    return (func_13('jzroe', '|') + func_20(x, 'svtu'))", "funcname": "main_solution"}
rule