C212313222213113313112113121111331333133313223311312233113311331   >>    C21231322221311331311211312111133133313331322331131223311331133   <<    C212313222213113313112113121111331333133313223311312233113311333   >>      C212313222213113313112113121111331333133313223311312233113311332   >>