You are given a code:

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

Can you predict the output of `main_solution("kkcsocnj")` 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": "kkcsocnj"}, "ref_output": "\u00ab\u00abkf\u00bb\u00bb\u00ab\u00abkk\u00bb\u00bb\u00ab\u00abcr\u00bb\u00bb\u00ab\u00absu\u00bb\u00bb\u00ab\u00abok\u00bb\u00bb\u00ab\u00abca\u00bb\u00bb\u00abn\u00bb\u00abj\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_15('fkruka'))", "funcname": "main_solution"}
rule