You are given a code:

def main_solution(x):
    return func_20(func_20('yga', x), func_15('xrjfq'))

Can you predict the output of `main_solution("ijyqxlng")` 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": "ijyqxlng"}, "ref_output": "y\u00abixg\u00bbj\u00abary\u00bbq\u00abxjl\u00bbn\u00abgf\u00bb\u00abq\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_20('yga', x), func_15('xrjfq'))", "funcname": "main_solution"}
rule