_____15151515_______15151515___15____15__15151515__15_____15
____15_____15______15____15___15____15__15________1515___151
___15_____________15____15___15____15__15________15_15__1515
__15_____________15____15___15151515__151515____15__15_15_15
_15_____________15____15___15____15__15________15___151___15
15_____15_____1515151515__15____15__15________15_____1____15
15151515_____15______15__15____15__15151515__15___________15
______________________________________________________________
_______151515___15____15__15151515__1515151___151515____151515
_____15____15__15____15__15____15__15_______15____15__15____15
____15____15__15____15__15________15_______15____15__15____15
___15____15__15151515__15________15151____15____15__15____15
__15151515__15____15__15________15_______15____15__15151515
_15____15__15____15__15________15_______15____15__15____15
15____15__15____15__15________1515151__15____15__15____15
