You are given a code:

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

Can you predict the output of `main_solution("bjzjigmepp")` 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": "bjzjigmepp"}, "ref_output": "k|n|k|f|h|f|u|t|c|m|q", "ref_code": "def main_solution(x):\n    return func_13(('knkfh' + 'futcmq'), '|')", "funcname": "main_solution"}
rule