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