You are given a code:

def main_solution(x):
    return func_20('isjum', 'ztuzej')

Can you predict the output of `main_solution("lovtct")` 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": "lovtct"}, "ref_output": "izstjuuzmej", "ref_code": "def main_solution(x):\n    return func_20('isjum', 'ztuzej')", "funcname": "main_solution"}
rule