idnr: 513

	2
	3
		3
		1

Difficulty: Super easy (0)

idnr: 503

			2
1
			3
4

Difficulty: Super easy (0)

idnr: 424


3	2
		4	3

Difficulty: Super easy (0)

idnr: 316

	2		4


1		2

Difficulty: Super easy (0)