Any 6 x 4 6 x 5 6 x 6 7 x 4 7 x 5 7 x 6 7 x 7 8 x 4 8 x 5 8 x 6 8 x 7 8 x 8 9 x 4 9 x 5 9 x 6 9 x 7 9 x 8 10 x 4 10 x 5 10 x 6 10 x 7 10 x 8 11 x 4 11 x 5 11 x 6 11 x 7 11 x 8 12 x 4 12 x 5 12 x 6 12 x 7 12 x 8