6 2 9 5 9 July 8, 2019 16 32 64 128 6 2 9 4 5 9 6 2 9 5 8 9 6 2 9 3 5 9 6 2 1 9 9 5 7 5 9 6 2 9 9 5 6 x 9 2 3 7 9z 6 9z 2 5 9z 9 9 5 9x 2 )=- 6
