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

Difficulty: Hard

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

Difficulty: Very easy

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

Difficulty: Very Hard

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

Difficulty: Hard