You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_1(x, 3))

Can you predict the output of `main_solution("xvrjqrl")` 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": "xvrjqrl"}, "ref_output": "\u00abxxv\u00bbr\u00abjvq\u00bbr\u00ablrx\u00bbv\u00abrjj\u00bbq\u00abrql\u00bbx\u00abvrr\u00bbj\u00abqlr\u00bbl", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_1(x, 3))", "funcname": "main_solution"}
rule