C11111333133313232233133313331333133313223313331323132233133333121   >>    C1111133313331323223313331333133313331322331333132313223313333312   <<    C11111333133313232233133313331333133313223313331323132233133333123   >>      C11111333133313232233133313331333133313223313331323132233133333122   >>