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: Woodchucks can dig up to three entrances to _ den.
Example Output: one

Example Input: Colds are common in young children, and five or _ colds a year are quite common.
Example Output:
six