C212313222213113313112113121111331323132233133313223313331123313112121   >>    C21231322221311331311211312111133132313223313331322331333112331311212   <<    C212313222213113313112113121111331323132233133313223313331123313112123   >>      C212313222213113313112113121111331323132233133313223313331123313112122   >>