C111113331333132322331333133313331311211331311331333132333121111133312121   >>    C11111333133313232233133313331333131121133131133133313233312111113331212   <<    C111113331333132322331333133313331311211331311331333132333121111133312123   >>      C111113331333132322331333133313331311211331311331333132333121111133312122   >>