18 x 9 1 4 July 8, 2019 16 32 64 128 9 1 4 x 18 3 4 1 18 x 12 y 9 1 4 1 x 1 18 x 9 40 18 x 5 6 4 9 1 3 18 4 x 2 9 x 1 5 18 x 9 x 9
