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%% remove_duplicate_predicates
%%remove_duplicate_predicates(Predicates1
%% Predicates1=[Predicate2|Predicates3],
%% remvdup([a,a,a,b,b,c],[],A)
%% A = [a, b, c].
remvdup([],A,A):-!.
remvdup(A,B,C):-
A=[A1|As],
delete(As,A1,B2),
append(B,[A1],D),
remvdup(B2,D,C).
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