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

Ex Input:
Bifocal lenses have _ distinct segments with different powers.

Ex Output:
two


Ex Input:
Yews typically have _ flushes of growth each growing season.

Ex Output:
two


Ex Input:
Porphyritic textures form primarily because of _ rates of cooling.

Ex Output:

two