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

Difficulty: Very easy

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

Difficulty: Medium

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

Difficulty: Hard

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

Difficulty: Easy