C212313222213113313112113121111331323132233133313232233312323221   >>    C21231322221311331311211312111133132313223313331323223331232322   <<    C212313222213113313112113121111331323132233133313232233312323223   >>      C212313222213113313112113121111331323132233133313232233312323222   >>