In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Input: Consider Input: Germs have _ means of locomotion execpt to attach themselves to particles of dust.

Output: no


Input: Consider Input: Sharks have five to _ gill slits.

Output: seven


Input: Consider Input: Mango trees grown from seed can take up to _ years to bear fruit.


Output: eight