for (int i = 0; i < 16; i++) {
            list.add(new DataNode(i));
            list.get(i).connections.add(i);
        }

        for (int i = 0; i < 16; i++) {

            if (list.get(i).connections.size() == 3) {

            } else {
                int size = (int) (Math.random() * 4);
                for (int j = 0; j <= size; j++) {
                    int connection = 0;

                    if (list.get(i).node == 0) {
                        while (true) {
                            connection = (int) (Math.random() * 14) + 1;
                            if (connection != list.get(i).node && connection != list.get(i).connections.get(0) && connection != list.get(i).connections.get(1) && connection != list.get(i).connections.get(2)) {
                                list.get(i).next = list.get(connection);
                                list.get(connection).next = list.get(i);

                                list.get(i).connections.add(connection);
                                list.get(connection).connections.add(i);
                                break;
                            } else {

                            }
                        }
                    }
                    if (list.get(i).node == 15) {
                        while (true) {
                            connection = (int) (Math.random() * 14) + 1;
                            if (connection != list.get(i).node && connection != list.get(i).connections.get(0) && connection != list.get(i).connections.get(1) && connection != list.get(i).connections.get(2)) {
                                list.get(i).next = list.get(connection);
                                list.get(connection).next = list.get(i);

                                list.get(i).connections.add(connection);
                                list.get(connection).connections.add(i);
                                break;
                            } else {

                            }

                        }
                    } else {
                        connection = (int) (Math.random() * 16);
                        if (connection != list.get(i).node && connection != list.get(i).connections.get(0) && connection != list.get(i).connections.get(1) && connection != list.get(i).connections.get(2)) {
                            list.get(i).next = list.get(connection);
                            list.get(connection).next = list.get(i);

                            list.get(i).connections.add(connection);
                            list.get(connection).connections.add(i);
                        }
                    }
                }
            }

        }

    }