Как добавить Inline кнопки в Telegram?

List<InlineKeyboardButton[]> list = new List<InlineKeyboardButton[]>();
            int i = 0;
            for (; i < Groups.Count(); i++)
            {
              
                try
                {
                    list.Add(new[] { InlineKeyboardButton.WithCallbackData(Groups[i]),
                    InlineKeyboardButton.WithCallbackData(Groups[i + 1]),
                    InlineKeyboardButton.WithCallbackData(Groups[i + 2]),
                    InlineKeyboardButton.WithCallbackData(Groups[i + 3])
                    });
                     
                }
                catch (System.IndexOutOfRangeException)
                { }
                i = i + 3;

            }
            //var inline = new InlineKeyboardMarkup(list);
            InlineKeyboardMarkup ss = new InlineKeyboardMarkup(list);
 TgBot.SendTextMessageAsync(message.Message.Chat.Id, "Каво?", replyMarkup: ss);