C11112331312111112111133133313331333133313132211312111133132322123313223221   >>    C1111233131211111211113313331333133313331313221131211113313232212331322322   <<    C11112331312111112111133133313331333133313132211312111133132322123313223223   >>      C11112331312111112111133133313331333133313132211312111133132322123313223222   >>