return [[ 0, 0, 0 ],
[ 0, 0, -8 ],
[ 1, 0, -4 ],
[ 1, 0, -12 ],
[ 2, 0, 0 ],
[ 2, 0, -8 ],
[ 3, 0, -4 ],
[ 3, 0, -12 ],
[ 4, 0, 0 ],
[ 4, 0, -8 ],
[ 5, 0, -4 ],
[ 5, 0, -12 ],
[ 6, 0, 0 ],
[ 6, 0, -8 ],
[ 7, 0, -4 ],
[ 7, 0, -12 ],
[ 8, 0, 0 ],
[ 8, 0, -8 ],
[ 10, 0, 0 ],
[ 10, 0, -8 ],
[ 12, 0, 0 ],
[ 12, 0, -8 ],
[ 14, 0, 0 ],
[ 14, 0, -8 ]];;