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.

Ex Input:
Respiratory therapists complete two to ____ years of education.

Ex Output:
four


Ex Input:
Infected rodents carry and secrete the virus for about ____ days.

Ex Output:
seven


Ex Input:
Cotton is most susceptible to injury by thrips from emergence through the ____ to four leaf stage.

Ex Output:

three