1-	2-	7+
		4
3-	1-		6+
	2

Difficulty: Medium ()

1-	8+		12+
	8*
7+
		3+

Difficulty: Medium ()

4*		6*
12*	2*		4
	12*	4*	3

Difficulty: Easy ()

2-	1	2-	24*
	16*
		2-
1-

Difficulty: Easy ()