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

Input: Consider Input: Several countries appear to have _ islands at all.

Output: no


Input: Consider Input: Dwarf trees are diminutive and shrub-like, reaching _ feet or so at maturity.

Output: four


Input: Consider Input: Parasitic nematodes are beneficial for _ reasons.


Output: six