You are given a code:

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

Can you predict the output of `main_solution("cjbxvde")` 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": "cjbxvde"}, "ref_output": "c\u00abjqb\u00bbx\u00abvod\u00bbe\u00abcij\u00bbb\u00abxzv\u00bbdecjbxvde", "ref_code": "def main_solution(x):\n    return func_20(func_1(x, 3), func_15('qoiz'))", "funcname": "main_solution"}
rule