return [[ 0, 0, 0, 0 ],
[ 0, 4, 0, 0 ],
[ 0, 8, 0, 0 ],
[ 13, 0, 0, 0 ],
[ 13, 4, 0, 0 ],
[ 13, 8, 0, 0 ],
[ 26, 0, 0, 0 ],
[ 26, 4, 0, 0 ],
[ 26, 8, 0, 0 ],
[ 39, 0, 0, 0 ],
[ 39, 4, 0, 0 ],
[ 39, 8, 0, 0 ]];;