idnr: 142

1			2
		4
	1
3			4

Difficulty: Super easy (0)

idnr: 268

2			1
		3
	2
4			3

Difficulty: Super easy (0)

idnr: 131

	3
		1
	4
		2

Difficulty: Super easy (0)

idnr: 728

	2	3
4
			3
	4	1

Difficulty: Super easy (0)