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:
Inversions have the classic double loop at meiosis, and have ____ crossovers when heterozygotes.

Ex Output:
no


Ex Input:
Titanium is found in column ____ along with chemically similar zirconium, hafnium, and thorium.

Ex Output:
four


Ex Input:
Phenomenology of religion has at least ____ aspects.

Ex Output:

two