You are given a code:

def main_solution(x):
    return func_20(('byvx' + x), func_15('ssdr'))

Can you predict the output of `main_solution("rgrcg")` 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": "rgrcg"}, "ref_output": "b\u00abysv\u00bbx\u00abrsg\u00bbr\u00abcdg\u00bb\u00abr\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('byvx' + x), func_15('ssdr'))", "funcname": "main_solution"}
rule