You are given a code:

def main_solution(x):
    return (func_17('tvqj') + func_13(x, '|'))

Can you predict the output of `main_solution("agxbzxafb")` 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": "agxbzxafb"}, "ref_output": "jqvta|g|x|b|z|x|a|f|b", "ref_code": "def main_solution(x):\n    return (func_17('tvqj') + func_13(x, '|'))", "funcname": "main_solution"}
rule