You are given a code:

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

Can you predict the output of `main_solution("zdlwvyfiin")` 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": "zdlwvyfiin"}, "ref_output": "\u00abzwd\u00bbl\u00abwev\u00bby\u00abfui\u00bbi\u00abnkz\u00bbd\u00ablew\u00bbv\u00abyif\u00bbiinzdlwvyfiin", "ref_code": "def main_solution(x):\n    return func_20(func_15('weukei'), func_1(x, 3))", "funcname": "main_solution"}
rule