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

Difficulty: Easy

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

Difficulty: Very easy

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

Difficulty: Hard

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

Difficulty: Medium