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member(X, [X|_]).
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member(X, [_|T]) :- member(X, T).
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memberr(X, X).
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memberr(X, [X|_]).
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memberr(X, [[H|T1]|T2]) :-
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memberr(X, H);
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memberr(X, T1);
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memberr(X, T2).
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memberr(X, [_|T]) :- member(X, T).
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sameLen([], []).
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sameLen([_|TA], [_|TB]) :- sameLen(TA, TB).
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