pos: CC DT JJ NN TO DT NNP CC JJ JJ NNS IN NNP VBD RP JJ NN IN DT JJ NN , VBD TO VB NNS IN JJ NN .
tokens: But an open arbitrage to the U.S. and tight Italian supplies after Elf scooped up Med material over the last week , continued to underpin prices into next week .
ltokens: Gasoline prices fell after striking Elf refinery workers voted to go back to work , traders said .