C11112331312111112111133133313331333132323213331333131211331121311   >>    C1111233131211111211113313331333133313232321333133313121133112131   <<    C11112331312111112111133133313331333132323213331333131211331121313   >>      C11112331312111112111133133313331333132323213331333131211331121312   >>