c 0 0 0

c 1.5 0 0

c 1.5 1 0

c 0 1 0

c 0 0 2

c 1.5 0 2

c 1.5 1 2

c 0 1 2

c 0.75 0 1

c 1.5 0.5 1

c 0.75 1 1

c 0 0.5 1

c 0.75 0.5 0

c 0.75 0.5 2

Kristal