C111113331333132322331333133313331311331323133313232233333313232222121   >>    C11111333133313232233133313331333131133132313331323223333331323222212   <<    C111113331333132322331333133313331311331323133313232233333313232222123   >>      C111113331333132322331333133313331311331323133313232233333313232222122   >>