vector<string> namesOfSeqs;
map<string,int> seqsPerGroup; //groupname, number of seqs in that group.
map<string, GroupIndex> treemap; //sequence name and <groupname, vector index>
void print(ostream&);
vector<string> namesOfSeqs;
map<string,int> seqsPerGroup; //groupname, number of seqs in that group.
map<string, GroupIndex> treemap; //sequence name and <groupname, vector index>
void print(ostream&);