6 15 x 5 9 July 8, 2019 16 32 64 128 15 8 3 6 x 5 9 5 6 7 15 x 9 15 x 6 8 5 9 x 7 15 5 6 x 9 10 5 6 9 15 x 40 5 x 2 15 6 x 2 9 6/15 x 5 15 /9 ×6
