C11112331312111112111133133313331333133313223223313121111331323211232321   >>    C1111233131211111211113313331333133313331322322331312111133132321123232   <<    C11112331312111112111133133313331333133313223223313121111331323211232323   >>      C11112331312111112111133133313331333133313223223313121111331323211232322   >>