C212313222213113313112113121111331323132233133313223313113313331333133312121   >>    C21231322221311331311211312111133132313223313331322331311331333133313331212   <<    C212313222213113313112113121111331323132233133313223313113313331333133312123   >>      C212313222213113313112113121111331323132233133313223313113313331333133312122   >>