You are given a code:

def main_solution(x):
    return func_20(func_17('klgtj'), func_15('oitj'))

Can you predict the output of `main_solution("enniffzjsv")` 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": "enniffzjsv"}, "ref_output": "j\u00abtog\u00bbl\u00abki\u00bb\u00abt\u00bb\u00abj\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_17('klgtj'), func_15('oitj'))", "funcname": "main_solution"}
rule