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

Difficulty: Very Hard

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

Difficulty: Easy

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

Difficulty: Medium

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

Difficulty: Medium