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: Background color can be a transition of ____ colors.

Output: two


Input: Consider Input: Cockroaches have six legs, ____ antennae and some have wings.

Output: two


Input: Consider Input: Ribbons signify the tying together of ____ lives.


Output: two