return [[ 0, 0, 0, 0, 0, 0, 0 ],
[ 0, 0, 0, -4, 6, 2, 0 ],
[ 0, 0, 0, -8, 12, 4, 0 ],
[ 0, 2, 0, 0, 0, 0, 0 ],
[ 0, 2, 0, -4, 6, 2, 0 ],
[ 0, 2, 0, -8, 12, 4, 0 ],
[ 0, 4, 0, 0, 0, 0, 0 ],
[ 0, 4, 0, -4, 6, 2, 0 ],
[ 0, 4, 0, -8, 12, 4, 0 ],
[ 3, 0, 3, -2, 3, 1, 0 ],
[ 3, 0, 3, -6, 9, 3, 0 ],
[ 3, 0, 3, -10, 15, 5, 0 ],
[ 3, 2, 3, -2, 3, 1, 0 ],
[ 3, 2, 3, -6, 9, 3, 0 ],
[ 3, 2, 3, -10, 15, 5, 0 ],
[ 3, 4, 3, -2, 3, 1, 0 ],
[ 3, 4, 3, -6, 9, 3, 0 ],
[ 3, 4, 3, -10, 15, 5, 0 ]];;