1					2		2		2		3			3		2
		1		3		4		1					2		2
2			4		2
						2			4		6		3			2
	2		5		4		3			1					2
2								3			8		4			2
	3			4		3									2
2			2		1			3			6		3			2
	2			1			2								2
3			5		3			5			7		4			2
	2						1		1						2
			3			3		3					1			2
3				1					3		4				2
	4		4		5		3			2
2											2		2			3
	4		5		5			2		3		2		1
2		2		2			2		2		2		2			2

Difficulty: Hard