7		9	2	3
3	2					1
	4				9	5		2	1
	3							10
	6	4			5
				8			2	4
	1							3
7	10		3	6				5
			10					8	6
			7	4	3		10

Difficulty: Super easy (0)

		1	3		7	4
7	5		9
		3	10	5
	6				8
3			6				5
		5				10			3
				3				2
					6	3	8
						2		9	1
			1	4		6	10

Difficulty: Very easy (0)

3				9		6			10
10	6				4				5
	3				9			5
				5					4
					8	1		6
	1		3	6
9					10
	2			4				1
7				3				10	1
1			5		6				7

Difficulty: Super easy (0)

		3			2
			2	10		9
						2		6
4			10				9	7
	5						2		6
9		1						8
	2	8				3			4
	9		3
			6		4	8
				3			5

Difficulty: Very easy (0)