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

Input: Consider Input: Water is the only substance on earth that exists naturally in _ states .

Output: three


Input: Consider Input: Pangolins walk on all _ of their stout limbs, which are adapted for digging.

Output: four


Input: Consider Input: Plants continue to bloom for about _ months.


Output: two