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

Example Input: Most cats have only four to _ toes per paw, depending on whether it is the front or back paw.
Example Output: five

Example Input: Architectural shingles are twice or _ times as thick as ordinary shingles.
Example Output: three

Example Input: Any food can cause an allergic reaction, but only _ foods cause nine out of ten reactions.
Example Output:
eight