C212313222213113313112113121111331323132233133313223313113313331333133313122221   >>    C21231322221311331311211312111133132313223313331322331311331333133313331312222   <<    C212313222213113313112113121111331323132233133313223313113313331333133313122223   >>      C212313222213113313112113121111331323132233133313223313113313331333133313122222   >>