C11111333133313232233133313331333133313331312111133133313112211211121   >>    C1111133313331323223313331333133313331333131211113313331311221121112   <<    C11111333133313232233133313331333133313331312111133133313112211211123   >>      C11111333133313232233133313331333133313331312111133133313112211211122   >>