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

Example Input: Smokers tend to become disabled and retire early _ times more than non-smokers.
Example Output: six

Example Input: Young pandas mature very slowly and are almost _ months old before they are weened.
Example Output: six

Example Input: Turkish vowels are in _ classes, front and back.
Example Output:
two