You are given a code:

def main_solution(x):
    return (func_20('jfqfot', 'pvk') + func_3('wllc'))

Can you predict the output of `main_solution("uaborvsjcx")` 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": "uaborvsjcx"}, "ref_output": "jpfvqkfotcllw", "ref_code": "def main_solution(x):\n    return (func_20('jfqfot', 'pvk') + func_3('wllc'))", "funcname": "main_solution"}
rule