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.

Example Input: Some programming languages have ____ or more standards .
Example Output: two

Example Input: Calves are spotted when born and develop their brown coats in ____ months.
Example Output: six

Example Input: Gerbils usually live for ____ to four years.
Example Output:
three