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

Difficulty: Hard

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

Difficulty: Medium

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

Difficulty: Very easy

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

Difficulty: Medium