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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)