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

Ex Input:
Birds bitten by infected mosquitoes are infectious from _ to eight days.

Ex Output:
four


Ex Input:
Human beings have _ fingers.

Ex Output:
ten


Ex Input:
Spermatogenesis produces _ haploid spermatids from the precursor cell.

Ex Output:

four