Write a python command line program that reads a file of fasta sequences from STDIN, finds the unique subsequences that occur in each single tRNA such that no members of this set occur among any of the other tRNA sets. Each of those 22 sets should be minimized, such that no member of that unique subsequence set is a substring of any other member of this set. [ Unique and Essential] As an example, let's say that both ACG and AAACGA are in a unique set. Since ACG is a substring of AAACGA we would remove AAACGA. [ ACG is Essential ] Use Python sets for this assignment[required]. Not only will your code be smaller, but it will be more likely to work. The union, intersection and difference operators will be quite useful.