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

Difficulty: Super easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Harder (0)