which row is odd?
row 1:llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll
row 2:lllllllllllllllllllllllllllllllllllllllllllllll!llllllllllllllllllllllllllll
row 3:llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll