C212313222213113313112113121111331323132233133313232233133323221211   >>    C21231322221311331311211312111133132313223313331323223313332322121   <<    C212313222213113313112113121111331323132233133313232233133323221213   >>      C212313222213113313112113121111331323132233133313232233133323221212   >>