idnr: 900

1
			2
3
			3

Difficulty: Super easy (0)

idnr: 1876

		2
	3
		1
	4

Difficulty: Super easy (0)

idnr: 15

	4
		1	3
3	1
		4

Difficulty: Super easy (0)

idnr: 2182

		4
			3
1
	4

Difficulty: Very easy (0)