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

Difficulty: Medium

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

Difficulty: Very easy

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

Difficulty: Super Hard

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

Difficulty: Very Hard