You are given a code:

def main_solution(x):
    return (('hna').lower() + func_15('pjpzwi'))

Can you predict the output of `main_solution("xagyls")` 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": "xagyls"}, "ref_output": "hna\u00abp\u00bb\u00abj\u00bb\u00abp\u00bb\u00abz\u00bb\u00abw\u00bb\u00abi\u00bb", "ref_code": "def main_solution(x):\n    return (('hna').lower() + func_15('pjpzwi'))", "funcname": "main_solution"}
rule