idnr: 228

			4
1
			3
2

Difficulty: Super easy (0)

idnr: 493

	4
2			1
4			3
		1

Difficulty: Super easy (0)

idnr: 28

		3
		4
	2
	1

Difficulty: Super easy (0)

idnr: 421

		1
		2
	3
	4

Difficulty: Super easy (0)