##########++######
        #................#
        #......#..#a.....#
###+#####................+
........'................+
###+#####......#..#......#
        #................#
        ####'#####++######
        #.......#         
        #.......#         
        #.......#         
        #...<...#         
        #.......#         
        #.......#         
        #.......#         
        #########