C13131221323331323131323132323213231323131323223313233313231223221   >>    C1313122132333132313132313232321323132313132322331323331323122322   <<    C13131221323331323131323132323213231323131323223313233313231223223   >>      C13131221323331323131323132323213231323131323223313233313231223222   >>