C13131221323331323131323132323213231323131323223313233313232212323231   >>    C1313122132333132313132313232321323132313132322331323331323221232323   <<    C13131221323331323131323132323213231323131323223313233313232212323233   >>      C13131221323331323131323132323213231323131323223313233313232212323232   >>