You are given a code:

def main_solution(x):
    return func_20('qjnz', 'rcwqi')

Can you predict the output of `main_solution("sumuemr")` 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": "sumuemr"}, "ref_output": "qrjcnwzqi", "ref_code": "def main_solution(x):\n    return func_20('qjnz', 'rcwqi')", "funcname": "main_solution"}
rule