C11111333133313232233133313331333133313331311331333133313133313131121   >>    C1111133313331323223313331333133313331333131133133313331313331313112   <<    C11111333133313232233133313331333133313331311331333133313133313131123   >>      C11111333133313232233133313331333133313331311331333133313133313131122   >>