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

Example Input: Most anoles are said to live between _ and eight years.
Example Output: four

Example Input: Flatworms exhibit _ forms of life styles, free-living and parasitic.
Example Output: two

Example Input: Paraovarian cysts are of _ types i.e. mesothelial, paramesonephric or mesonephric.
Example Output:
three