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: People often have to wait between three and ____ years for an organ especially for a liver.
Example Output: five

Example Input: Acoustic instruments consist of ____ main parts neck, top, back and sides.
Example Output: four

Example Input: Pelvic fins are well developed, and rather narrow, with nine to ____ fin rays.
Example Output:
ten