C111113331333132322331333133313331311331311331323133313232212121   >>    C11111333133313232233133313331333131133131133132313331323221212   <<    C111113331333132322331333133313331311331311331323133313232212123   >>      C111113331333132322331333133313331311331311331323133313232212122   >>