You are given a code:

def main_solution(x):
    return func_20(func_15('kje'), func_23('leszl', 3))

Can you predict the output of `main_solution("txay")` 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": "txay"}, "ref_output": "\u00ablke\u00bbs\u00abzjl\u00bb1\u00abe\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('kje'), func_23('leszl', 3))", "funcname": "main_solution"}
rule