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: Brook stickleback have prominent mouths, large eyes and ____ to six spines on their backs.

Output: four


Input: Consider Input: Hares hold their young ____ to ten days longer.

Output: seven


Input: Consider Input: Nymphs reach maturity in five to ____ months, with faster maturation at higher temperatures.


Output: ten