In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Input: Consider Input: Crustaceans have _ major body parts .

Output: three


Input: Consider Input: Monsoons coming every three to _ years can add almost a foot of water to the mountain's surface.

Output: seven


Input: Consider Input: Caterpillars have _ pairs of six ocelli on their head.


Output: two