problem([]==>a:int list=>n:int=>app(rev(a),n::nil)=rev(n::a)in int list,
sym_eval(normalize_term([reduction([2,1],[rev2,equ(int list,left)])]))then[elementary(intro(new[a])then[intro(new[n])then[identity,wfftacs],wfftacs])],lambda(v0,lambda(v1,su(su(su(lambda(v2,su(su(v4,[v3 of v1],[v4]),[v2 of v0],[v3]))of lambda(a,lambda(n,axiom)),[v2 of v0],[v3]),[rev2 of v1],[v2]),[term_of(rev2)],[rev2]))),
[
]).
