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

Difficulty: Medium

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

Difficulty: Very Hard

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

Difficulty: Easy

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

Difficulty: Easy