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

Difficulty: Medium

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

Difficulty: Medium

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

Difficulty: Hard

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

Difficulty: Easy