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

Difficulty: Very easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)