You are given a code:

def main_solution(x):
    return func_20(func_15('qyifho'), func_13(x, '-'))

Can you predict the output of `main_solution("fzisssc")` 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": "fzisssc"}, "ref_output": "\u00abfq-\u00bbz\u00ab-yi\u00bb-\u00absi-\u00bbs\u00ab-fs\u00bb-\u00abch\u00bb\u00abo\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('qyifho'), func_13(x, '-'))", "funcname": "main_solution"}
rule