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id = 167
number = 60
visible = True
facts = None
solution = '''\
number(Num) --> dig167(N), { l2n167(N,Num) }.
number(Num) --> nonzero167([N]), numb_next167(N1), { l2n167([N|N1],Num) }.
zero167([0]) --> [0].
nonzero167([N]) --> [N], {memb167(N, [1,2,3,4,5,6,7,8,9])}.
dig167(N) --> zero167(N).
dig167(N) --> nonzero167(N).
numb_next167(N) --> dig167(N).
numb_next167([N|N1]) --> dig167([N]), numb_next167(N1).
memb167(X, [X|_]).
memb167(X, [_|T]) :-
memb167(X, T).
l2n167(L, N) :-
l2n167(L, 0, N).
l2n167([N], S, R) :-
R is S*10+N.
l2n167([H|T], S, N) :-
S1 is S*10+H,
l2n167(T, S1, N).
'''
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