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% Your program goes here tst:- Li=[a,b,c,d,e,f,g,h], findall(_, (append(_,B,Li),B=[C|_],writeln(C)), _). tst2:- Li=[a,b,c,d,e,f,g,h], findall(_, (append(A,_,Li),writeln(A)), _). tst3:- Li=[a,b,c,d,e,f,g,h], findall(_, (append(_,B,Li),writeln(B)), _). /** <examples> tst. */