You are given a code:

def main_solution(x):
    return (func_15('fnjy') + func_13(x, '-'))

Can you predict the output of `main_solution("cvclsyvz")` 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": "cvclsyvz"}, "ref_output": "\u00abf\u00bb\u00abn\u00bb\u00abj\u00bb\u00aby\u00bbc-v-c-l-s-y-v-z", "ref_code": "def main_solution(x):\n    return (func_15('fnjy') + func_13(x, '-'))", "funcname": "main_solution"}
rule