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Lists with 2 mutual elements

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Zach1986

Programmer
Jan 11, 2011
4
GR
Hello,
very interesting forum.
I want to solve a program with 2 lists which return
true if have 2 exactly mutual elements.

Thank you for help
 
for example
?- lists([a,b,c,d,e],[a,b,c,d,e]).
false


?- lists([a,b,c,d,e],[h,b,f,c,3]).
true
 
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