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

Difficulty: Super easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Super easy (0)