[1,0;-5/8,1]*[8,6,1,0;5,4,0,1]
[1/8,0;0,1]*[1,0;-5/8,1]*[8,6,1,0;5,4,0,1]
[1,0;0,4]*[1/8,0;0,1]*[1,0;-5/8,1]*[8,6,1,0;5,4,0,1]
[1,-3/4;0,1]*[1,0;0,4]*[1/8,0;0,1]*[1,0;-5/8,1]*[8,6,1,0;5,4,0,1]
[1,-3/4;0,1]*[1,0;0,4]*[1/8,0;0,1]*[1,0;-5/8,1]

