You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_20('nqi', 'lerz'))

Can you predict the output of `main_solution("ohiuntls")` 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": "ohiuntls"}, "ref_output": "\u00abnol\u00bbq\u00abehi\u00bbr\u00abzi\u00bb\u00abu\u00bb\u00abn\u00bb\u00abt\u00bb\u00abl\u00bb\u00abs\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_20('nqi', 'lerz'))", "funcname": "main_solution"}
rule