You are given a code:

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

Can you predict the output of `main_solution("bljppxv")` 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": "bljppxv"}, "ref_output": "b|l|j|p|p|x|v|z|p|z|z|q|t", "ref_code": "def main_solution(x):\n    return func_13((x + 'zpzzqt'), '|')", "funcname": "main_solution"}
rule