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

Example Input: Some herbaceous plants live only five to _ years.
Example Output: six

Example Input: Tapirs have hoofed toes, with four toes on the front feet and _ toes on the hind feet.
Example Output: three

Example Input: Naloxone is nontoxic even in doses _ to twenty times larger than recommended doses.
Example Output:
ten