C11112331312111112111133133313331333133313223223313231333131231322321   >>    C1111233131211111211113313331333133313331322322331323133313123132232   <<    C11112331312111112111133133313331333133313223223313231333131231322323   >>      C11112331312111112111133133313331333133313223223313231333131231322322   >>