idnr: 5353

2
	6		5


		5		1
					5

Difficulty: Very easy (0)

idnr: 1812

				5
				6


	1
	2

Difficulty: Very hard (0)

idnr: 3726

				2	4
5


					5
3	5

Difficulty: Easy (0)

idnr: 1871

		4
1	3


				2	6
			5

Difficulty: Very hard (0)