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

Difficulty: Hard

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

Difficulty: Very easy

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

Difficulty: Medium

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

Difficulty: Very easy