Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.

Input: Consider Input: Animals exhibit ____ patterns for bringing sperm and eggs together.

Output: two


Input: Consider Input: Kayak paddles have ____ blades, canoe paddles have one.

Output: two


Input: Consider Input: Most phosphorus comes from ____ sources, sewage and runoff.


Output: two