81.   Art includes a graphic showing how the HANS system works.

82.   As long as the plumbing system is working perfectly, there is no need to concern yourself with these valves.

83.   As George W. Bush has four years to prove, the American system works.

84.   As it has the past three years, the system worked.

85.   As Thompson said, perhaps the biggest goal of the committee is to remove the curtain and let Americans see how the system works.

86.   At first I was skeptical of how well this system would work.

87.   At the same time, however, the trial has given the nation a sour taste of how the justice system works.

88.   At the same time, many scholars concede that the star system can work.

89.   At the end of each match of the Open, Carlton speaks to the service-line umpire about how well the system worked.

90.   At the Van Nuys courthouse, Gutman said the new one-trial system is working wonderfully.