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

Input: Consider Input: All loci have _ or two alleles.

Output: one


Input: Consider Input: Abdominal scars consist of _ to four half-inch incisions.

Output: two


Input: Consider Input: Reclaimed water is sewage water that has been treated and disinfected using _ different methods.


Output: four