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:
Female dogs come into heat every ____ months or so.

Ex Output:
six


Ex Input:
Colostrum is bright yellowish thick milk secreted in the first ____ to six days after birth.

Ex Output:
three


Ex Input:
Eyes occupy the most prominent place among the ____ sensory organs of our body.

Ex Output:

five