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.

Example Input: Most solenoids have ____ tabs with holes for mounting.
Example Output: two

Example Input: Sponges have ____ main tissue layers.
Example Output: three

Example Input: Bivalves have ____ shells, like a clam or oyster.
Example Output:
two