You are given a code:

def main_solution(x):
    return func_20(func_15('yaskg'), func_1(x, 4))

Can you predict the output of `main_solution("yjqgqr")` 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": "yjqgqr"}, "ref_output": "\u00abyyj\u00bbq\u00abgaq\u00bbr\u00abysj\u00bbq\u00abgkq\u00bbr\u00abygj\u00bbqgqryjqgqr", "ref_code": "def main_solution(x):\n    return func_20(func_15('yaskg'), func_1(x, 4))", "funcname": "main_solution"}
rule