4
			1	2
	2
				1
	1	5
6

Difficulty: Easy (0)

	2			3
	3	1
			3	4
	6			5

Difficulty: Easy (0)

4				2
			5
		4		6
	5		4
		6
	1				3

Difficulty: Super easy (0)

		1
			6	1
5		2
			2		6
	4	5
			1

Difficulty: Super easy (0)