C212313222213113313112113121111331323132233133313232233131213221   >>    C21231322221311331311211312111133132313223313331323223313121322   <<    C212313222213113313112113121111331323132233133313232233131213223   >>      C212313222213113313112113121111331323132233133313232233131213222   >>