Yes, there is one more answer (if you weren't sure you should have run the program!).
at *** choose clause 2 under {T2/c(b,T3),L/c(b,c(Y,E1)),H/b,R/c(b,c(a,emp)),T/T3} yes(Y) <- ap(T3,c(b,c(Y,E1)),c(b,c(a,emp))) choose clause 1 under {T3/emp,L/c(b,c(a,emp)),Y/a,E1/emp} yes(a) <-