How many possible four aminoacid long peptides (a peptide is a small protein) can be made from the below pepti

Question

How many possible four aminoacid long peptides (a peptide is a small protein) can be made from the below peptides.
(I.E. rearrange them to form different sequences, where each sequence is made up of only the four aminoacids given below)



met trp met trp





Enter a whole number numerical answer.

Answer 1

34

Answer 2

met trp met trp
met met trp trp
met trp trp met
trp met trp met
trp trp met met

i got 5

Answer 3

proteins are made out of amino acids. any amount is possible