You are given a code:

def main_solution(x):
    return (func_15(x) + func_4('hlrz'))

Can you predict the output of `main_solution("dikyulur")` 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": "dikyulur"}, "ref_output": "\u00abd\u00bb\u00abi\u00bb\u00abk\u00bb\u00aby\u00bb\u00abu\u00bb\u00abl\u00bb\u00abu\u00bb\u00abr\u00bbhlrz", "ref_code": "def main_solution(x):\n    return (func_15(x) + func_4('hlrz'))", "funcname": "main_solution"}
rule