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:
Gibberellins are diterpenoids derived from four isoprenoid units forming a system of ____ rings.

Ex Output:
four


Ex Input:
Prokaryotes mean they have ____ nucleus in which they store genetic material.

Ex Output:
no


Ex Input:
Tree swallows arrive in spring before any of the ____ other species of swallows.

Ex Output:

five