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: Giant pandas move on all ____ legs.

Output: four


Input: Consider Input: Tetrads come in ____ shapes.

Output: seven


Input: Consider Input: Purines are six-membered rings attached to ____ membered rings.


Output: five