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

Ex Input:
Crustaceans have _ major body parts .

Ex Output:
three


Ex Input:
Acrobats mount a single bicycle until _ people in all are stacked on top of it.

Ex Output:
ten


Ex Input:
Reproduction is divided into _ categories sexual and asexual.

Ex Output:

two