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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Easy (0)