idnr: 854

3
		4
	2
			3

Difficulty: Super easy (0)

idnr: 1405


1	2
		4	3

Difficulty: Super easy (0)

idnr: 1529


			1
2

Difficulty: Super easy (0)

idnr: 1072

		3
	3
		4
	4

Difficulty: Super easy (0)