You are given a code:

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

Can you predict the output of `main_solution("bgrpqgnpl")` 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": "bgrpqgnpl"}, "ref_output": "s\u00abbbd\u00bbg\u00absgr\u00bbi\u00abprn\u00bbq\u00abmpg\u00bbn\u00abpql\u00bb\u00abg\u00bb\u00abn\u00bb\u00abp\u00bb\u00abl\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_20('sdsinm', x), func_15(x))", "funcname": "main_solution"}
rule