(VAR x y z) (RULES a(lambda(x),y) -> lambda(a(x,1)) a(lambda(x),y) -> lambda(a(x,a(y,t))) a(a(x,y),z) -> a(x,a(y,z)) lambda(x) -> x a(x,y) -> x a(x,y) -> y ) (COMMENT simple termination of SUBST after distribution elimination, see Zantema, JSC 1994)
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