return [[ 0, 0, 0, 0 ],
[ 0, 0, 0, 4 ],
[ 0, 0, 0, 8 ],
[ 0, 0, 0, 12 ],
[ 0, 0, 0, 24 ],
[ 9, 9, 0, 0 ],
[ 9, 9, 0, 4 ],
[ 9, 9, 0, 8 ],
[ 9, 9, 0, 12 ],
[ 9, 9, 0, 24 ],
[ 18, 18, 0, 0 ],
[ 18, 18, 0, 4 ],
[ 18, 18, 0, 8 ],
[ 18, 18, 0, 12 ],
[ 18, 18, 0, 24 ],
[ 27, 27, 0, 0 ],
[ 27, 27, 0, 4 ],
[ 27, 27, 0, 8 ],
[ 27, 27, 0, 12 ],
[ 27, 27, 0, 24 ]];;