solid solid hole solid solid hole solid solid hole
solid solid hole solid solid hole solid solid hole
solid solid hole solid solid hole solid solid hole
makes
blue red green blue red green blue red green blue
blue red green blue red green blue red green blue
blue red green blue red green blue red green blue
but you can also do:
solid solid hole solid solid hole solid solid hole
lid hole solid solid hole solid solid hole
solid solid hole solid solid hole solid solid hole
and get
blue red green blue red green blue red green blue
green blue red green blue red green blue
blue red green blue red green blue red green blue
each row is still in horizontal order, but successive rows are staggered, see?
