C11111333133313232233133313331333133313231322321111331313333121   >>    C1111133313331323223313331333133313331323132232111133131333312   <<    C11111333133313232233133313331333133313231322321111331313333123   >>      C11111333133313232233133313331333133313231322321111331313333122   >>