41.   Oil companies have blamed the increases on market forces, including refinery problems and cuts in world production.

42.   The inventory reports this week came into a market preoccupied by refinery problems, tight gasoline supplies in some regions, and high crude prices.

43.   The refinining bottleneck continues, and refinery problems still threaten regional supply dislocations.

44.   The reports dropped another bullish element into a market that is preoccupied with refinery problems, tight gasoline supplies in some regions, and high crude prices.

45.   The recent rise in U.S. gas prices was due to domestic American refinery problems, he argued.

46.   Tightness of heating oil and gasoline stocks, and a slew of recent refinery problems, also buoyed products futures.