What is the rule going by?
1. 43, 46, 49, 52, 55, 58 _ _ _ _ _ 2. 10, 18, 9, 17, 8, 16 _ _ _ _ _
3. 50, 53, 47, 50, 44, 47 _ _ _ _ _ 4. 46, 41, 42, 37, 38, 33 _ _ _ _ _ 5. 90, 84, 80, 74, 70, 64 _ _ _ _ _