One theater plans to present seven plays over seven weeks in the fall  They are F, G , J, K, O, R, S  There is one play a week, and each play runs exactly one week  The repertory must meet the following conditions :(1) G must be performed in the third week  (2) O and S cannot be performed continuously  (3) K must be staged before J and S
(4) F and J must be scheduled to perform in two consecutive weeks
J is scheduled for the first week