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:
Many churches have ____ windows on each side of the nave, numbers some consider holy.

Ex Output:
seven


Ex Input:
Carbon is able to bond with up to ____ other elements.

Ex Output:
four


Ex Input:
Larval stages extend upto ____ months and the pupal period for nearly three months.

Ex Output:

three