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