You are given a code:

def main_solution(x):
    return (func_15('jywfzd') + func_15('jevhc'))

Can you predict the output of `main_solution("lchfbag")` 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": "lchfbag"}, "ref_output": "\u00abj\u00bb\u00aby\u00bb\u00abw\u00bb\u00abf\u00bb\u00abz\u00bb\u00abd\u00bb\u00abj\u00bb\u00abe\u00bb\u00abv\u00bb\u00abh\u00bb\u00abc\u00bb", "ref_code": "def main_solution(x):\n    return (func_15('jywfzd') + func_15('jevhc'))", "funcname": "main_solution"}
rule