C212313222213113313112113121111331323132233133313232233133313113313223331231   >>    C21231322221311331311211312111133132313223313331323223313331311331322333123   <<    C212313222213113313112113121111331323132233133313232233133313113313223331233   >>      C212313222213113313112113121111331323132233133313232233133313113313223331232   >>