C212313222213113313112113121111331323132233133313221211111333133323213121221   >>    C21231322221311331311211312111133132313223313331322121111133313332321312122   <<    C212313222213113313112113121111331323132233133313221211111333133323213121223   >>      C212313222213113313112113121111331323132233133313221211111333133323213121222   >>