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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)