4						8	7	10			12
12	10						5		8	11
	7	2	3							6
				3		12		5		7
2		1	8			5
			12			2				3	11
7	12				5			4
					2			12	7		3
	5		2		11		12
	6							11	4	1
	11	8		6						10	5
1			5	10	4						7

Difficulty: Very easy (0)

		3	10	11	5				6		8
8	5			10				7	12	3
									10	5	4
	9	12		3			8			10	5
6						1			4		2
5	7					10			9		3
10		8			6					1	12
4		7			9						6
1	2			8			4		7	9
12	8	5
	1	9	6				10			12	7
3		10				8	2	1	5

Difficulty: Super easy (0)

4						11	6	5		10	2
10				9						4
					4			9	8		12
		10		4		12			1		5
3	2					8	7			6
		6	9			2				3
	10				11			6	5
	11			8	2					7	10
7		5			3		9		2
5		7	2			9
	4						1				9
6	1		11	5	10						7

Difficulty: Easy (0)

2	5			7							8
	9		7		10		8
	8		11	12				7
			12				3			9	1
	11				9	5	10	4	6
	1	4				2		5		8	10
9	6		4		1				8	10
		7	8	10	5	11				4
1	2			4				9
			2				5	3		1
				8		4		2		11
3							7			6	4

Difficulty: Super easy (0)