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

Input: Consider Input: Friction occurs when _ objects rub together.

Output: two


Input: Consider Input: Liquid crystals lack the full _ dimensional position and orientation order of ordinary crystals.

Output: three


Input: Consider Input: Ladybugs usually stay larvae for three or _ weeks, enough time to do some serious chowing down.


Output: four