11.   Until now, Noureddine Morceli had been pumping his slender arms, clenching his crooked teeth and running with great success against the records of others.

12.   Until now, Nourredine Morceli had been pumping his slender arms, clenching his crooked teeth and running with great success against the records of others.

13.   Asked about her wartime experiences, she just smiled, revealing a few crooked teeth.

14.   The Santa Clara-based company uses computers to design a more cosmetically appealing way to straighten crooked teeth.