0 0 0 a 0 0 1/2 b 1/3 2/3 0 c 2/3 1/3 0 c 1/3 2/3 1/2 d 2/3 1/3 1/2 d 0 0 z e 0 0 -z e 1/2 0 0 f 0 1/2 0 f 1/2 1/2 0 f 1/2 0 1/2 g 0 1/2 1/2 g 1/2 1/2 1/2 g 1/3 2/3 z h 2/3 1/3 z h 2/3 1/3 -z h 1/3 2/3 -z h 1/2 0 z i 0 1/2 z i 1/2 1/2 z i 0 1/2 -z i 1/2 0 -z i 1/2 1/2 -z i x 0 0 j 0 x 0 j -x -x 0 j -x 0 0 j 0 -x 0 j x x 0 j x 0 1/2 k 0 x 1/2 k -x -x 1/2 k -x 0 1/2 k 0 -x 1/2 k x x 1/2 k x -x 0 l x 2*x 0 l -2*x -x 0 l -x x 0 l -x -2*x 0 l 2*x x 0 l x -x 1/2 m x 2*x 1/2 m -2*x -x 1/2 m -x x 1/2 m -x -2*x 1/2 m 2*x x 1/2 m x y z n -y x-y z n -x+y -x z n -x -y z n y -x+y z n x-y x z n y x -z n x-y -y -z n -x -x+y -z n -y -x -z n -x+y y -z n x x-y -z n