You are given a code:

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

Can you predict the output of `main_solution("klqf")` 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": "klqf"}, "ref_output": "b|z|v|o|k|k|f|p|q|n", "ref_code": "def main_solution(x):\n    return func_13(('bzvok' + 'kfpqn'), '|')", "funcname": "main_solution"}
rule