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: Most dens are oval shape, six to ____ feet long and about six feet in height and width.

Output: nine

Input: Consider Input: Cognitive therapy is a time-limited treatment lasting ____ to four months.

Output: three

Input: Consider Input: Protists show the ____ basic types of sexual life cycles, with some other variants, too.
Output: three