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

Input: Consider Input: Calves grow quickly and are weaned from their mothers in only _ to four months.

Output: three


Input: Consider Input: Asian lions divide themselves into _ prides.

Output: two


Input: Consider Input: Conserved residues make similar contacts in _ repressor-operator complexes.


Output: two