Single

First

red		green
	blue
red		green

Second

	blue
red?		green
	blue

Nested

red		green.
	blue
red		green

	blue
red		green
	blue

	blue
red		green
	blue

	blue.
red		green
	blue

red		green
	blue
red		green!

	blue
red		green
	blue

red		green
	blue
red		green

	blue
red		green
	blue

	blue
red		green
	blue!