You are given a code:

def main_solution(x):
    return (func_13(x, '|') + func_15('sguem'))

Can you predict the output of `main_solution("bvhjozoxkf")` 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": "bvhjozoxkf"}, "ref_output": "b|v|h|j|o|z|o|x|k|f\u00abs\u00bb\u00abg\u00bb\u00abu\u00bb\u00abe\u00bb\u00abm\u00bb", "ref_code": "def main_solution(x):\n    return (func_13(x, '|') + func_15('sguem'))", "funcname": "main_solution"}
rule