61.   But most carriers have concentrated their efforts on the more lucrative business market.

62.   But others say the city should be concentrating its efforts on selling OTB, not improving it.

63.   But it took such excruciating effort on their part -- every game was such a grind -- that the mind boggles at the thought of trying it again.

64.   But several sources described the effort on condition of anonymity.

65.   But Sergeyev put much of the blame for the failed rescue effort on a lack of funding that left the navy short of divers and equipment.

66.   But New York has rolled out the effort on a scale unseen elsewhere.

67.   But Rabin believes that only such drastic measures will enable him to reassure Israeli voters and keep the peace efforts on track.

68.   But the response was more measured from those who fear the encroachment of such efforts on public-education spending.

69.   But they said they have focused their efforts on providing day care for welfare mothers.

70.   But they should not waste their effort on Dalton.