LLLLL_____________OOOOOOOOOOOOO____LLLLL
LLLLL_____________OOOOOOOOOOOOO____LLLLL
LLLLL_____________OOO________OOO_____LLLLL
LLLLL_____________OOO________OOO_____LLLLL
LLLLL_____________OOO________OOO_____LLLLL
LLLLL_____________OOO________OOO_____LLLLL
LLLLL_____________OOO________OOO_____LLLLL
LLLLL_____________OOO________OOO_____LLLLL
LLLLLLLLLLLLL_____OOO________OOO_____LLLLLLLLLLLLL
LLLLLLLLLLLLL_____OOOOOOOOOOOOO____LLLLLLLLLLLLL
LLLLLLLLLLLLL_____OOOOOOOOOOOOO____LLLLLLLLLLLLL