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: Sexual maturity is reached within ____ to four years.
Example Output: two

Example Input: Heart attacks occur most often around ____ in the morning.
Example Output: five

Example Input: Some motors contain ____ gears and spin very fast, and have little if any torque.
Example Output:
no