You are given a code:

def main_solution(x):
    return func_20(('gaw' + 'jnxchw'), func_15('jxky'))

Can you predict the output of `main_solution("ruij")` 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": "ruij"}, "ref_output": "g\u00abajw\u00bbj\u00abnxx\u00bbc\u00abhkw\u00bb\u00aby\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('gaw' + 'jnxchw'), func_15('jxky'))", "funcname": "main_solution"}
rule