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