private static void makeTet3(SquareColor[][] tet) {
        for (int i = 0; i < 4; i++) {
            for (int j = 0; j < 4; j++) {
                if (((i == 1 || i == 2) && j == 0) || (i == 3 && (j == 0 || j == 1))) {
                    tet[i][j] = SquareColor.RED;
                } else tet [i][j] = null;
            }
        }
    }