?n ? [4] 5(b) A traffic officer is assigned to control the traffic at the nine intersections

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[4] 5(b) A traffic officer is assigned to control the traffic at the nine intersections indicated in the figure .She is instructed to remain at each intersection for an hour and then to either remain at the same intersection or move to a neighboring intersection. To avoid establishing ix 2 ร 3 E 6 J'a'a' 7 5(b) A traffic officer is assigned to control the traffic at the nine intersections indicated [4] in the figure .She is instructed to remain at each intersection for an hour and then to either remain at the same intersection or move to a neighboring intersection. To avoid establishing [4] 5(b) A traffic officer is assigned to control the traffic at the nine intersections indicated in the figure .She is instructed to remain at each intersection for an hour and then to either remain at the same intersection or move to a neighboring intersection. To avoid establishing ix 2 ร 3 E 6 J'a'a' 7 5(b) A traffic officer is assigned to control the traffic at the nine intersections indicated [4] in the figure .She is instructed to remain at each intersection for an hour and then to either remain at the same intersection or move to a neighboring intersection. To avoid establishing