You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_20(x, 'jjag'))

Can you predict the output of `main_solution("xrslvqk")` 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": "xrslvqk"}, "ref_output": "\u00abxxj\u00bbr\u00abjrs\u00bba\u00ablsg\u00bbv\u00abqlk\u00bb\u00abv\u00bb\u00abq\u00bb\u00abk\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_20(x, 'jjag'))", "funcname": "main_solution"}
rule