Z 4 z 2 1 0 July 8, 2019 16 32 64 128 Z 4 2z 2 1 0 Z 6 z 4 z 3 z 2 1 0 Z 4 z 3 z 2 z 1 0 Z 4 z 3 2z 2 z 1 0 Z 2 4z 1 0
