C11112331312111112111133133313331333133112111113331311331323213131   >>    C1111233131211111211113313331333133313311211111333131133132321313   <<    C11112331312111112111133133313331333133112111113331311331323213133   >>      C11112331312111112111133133313331333133112111113331311331323213132   >>