Something
public text v1 · immutableatfed(K,Mi,Mit):-
sub_atom(Mi, _, K, 0, Tmp1),
sub_atom(Mit, 0, K, _, Tmp2),
Tmp1 = Tmp2.
ellenoriz(_,_,[]).
ellenoriz(K,Elem,[Lista|Listatail],T) :-
ellenoriz(K,Elem,Listatail),
atfed(K,Elem,Lista) -> append(Elem,Lista,T).