You are given a code:

def main_solution(x):
    return func_20(func_23('rfxs', 3), func_15('bwclk'))

Can you predict the output of `main_solution("dzvh")` 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": "dzvh"}, "ref_output": "r\u00abfbx\u00bbs\u00ab1w\u00bb\u00abc\u00bb\u00abl\u00bb\u00abk\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_23('rfxs', 3), func_15('bwclk'))", "funcname": "main_solution"}
rule