Usa "whittle down" in una frase

1. when she started to whittle down the shortlist

2. For they longed to whittle down life's flourishing nursery to one homogenised and inbred collective

3. • Whittle down some more

4. If his system didn’t have a strong winning edge over the market, his repetitive losses – combined with commission costs – would whittle down his account until it was ruined and too small to trade effectively