return [[ 0, 0, 0, 0 ],
[ 0, 7, 0, 0 ],
[ 0, 14, 0, 0 ],
[ 0, 21, 0, 0 ],
[ 0, 28, 0, 0 ],
[ 0, 35, 0, 0 ],
[ 0, 42, 0, 0 ],
[ 0, 49, 0, 0 ],
[ 8, 0, 0, 0 ],
[ 8, 7, 0, 0 ],
[ 8, 14, 0, 0 ],
[ 8, 21, 0, 0 ],
[ 8, 28, 0, 0 ],
[ 8, 35, 0, 0 ],
[ 8, 42, 0, 0 ],
[ 8, 49, 0, 0 ],
[ 24, 0, 0, 0 ],
[ 24, 7, 0, 0 ],
[ 24, 14, 0, 0 ],
[ 24, 21, 0, 0 ],
[ 24, 28, 0, 0 ],
[ 24, 35, 0, 0 ],
[ 24, 42, 0, 0 ],
[ 24, 49, 0, 0 ]];;