You are given a code:

def main_solution(x):
    return func_20(func_15('kcttzt'), func_1(x, 3))

Can you predict the output of `main_solution("oiencxbzp")` 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": "oiencxbzp"}, "ref_output": "\u00aboki\u00bbe\u00abncc\u00bbx\u00abbtz\u00bbp\u00aboti\u00bbe\u00abnzc\u00bbx\u00abbtz\u00bbpoiencxbzp", "ref_code": "def main_solution(x):\n    return func_20(func_15('kcttzt'), func_1(x, 3))", "funcname": "main_solution"}
rule