C212313222213113313112113121111331323132233133313221211111133133313221221   >>    C21231322221311331311211312111133132313223313331322121111113313331322122   <<    C212313222213113313112113121111331323132233133313221211111133133313221223   >>      C212313222213113313112113121111331323132233133313221211111133133313221222   >>