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:
Every human being carries six to ____ abnormal recessive genes.

Ex Output:
eight


Ex Input:
Many people have ____ symptoms until they suffer chest pains or a heart attack.

Ex Output:
no


Ex Input:
Some ancient writers say their usual height was ____ feet.

Ex Output:

seven