C11111333133313232233133313331333133313331311331333132233131121121   >>    C1111133313331323223313331333133313331333131133133313223313112112   <<    C11111333133313232233133313331333133313331311331333132233131121123   >>      C11111333133313232233133313331333133313331311331333132233131121122   >>