idnr: 3382

2			3
	1
		3
1			4

Difficulty: Super easy (0)

idnr: 721

	2
		3
	3
		4

Difficulty: Super easy (0)

idnr: 682

4
3
			1
			4

Difficulty: Super easy (0)

idnr: 67

		4
		2
	4
	3

Difficulty: Super easy (0)