%% Query generator
% Length 5
examples :-
s([A,B,C,D,E]),
write(A),write(' '),
write(B),write(' '),
write(C),write(' '),
write(D),write(' '),
write(E),write('.'),nl,
backtrack.
% Length 4
examples :-
s([A,B,C,D]),
write(A),write(' '),
write(B),write(' '),
write(C),write(' '),
write(D),write('.'),nl,
backtrack.
% Length 3
examples :-
s([A,B,C]),
write(A),write(' '),
write(B),write(' '),
write(C),write('.'),nl,
backtrack.
% Length 2
examples :-
s([A,B]),
write(A),write(' '),
write(B),write('.'),nl,
backtrack.
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