C212313222213113313112113121111331323132233133313231322331322121   >>    C21231322221311331311211312111133132313223313331323132233132212   <<    C212313222213113313112113121111331323132233133313231322331322123   >>      C212313222213113313112113121111331323132233133313231322331322122   >>