MAYBE
152.05/59.46	MAYBE
152.05/59.46	
152.05/59.46	Problem:
152.05/59.46	 app(nil(),k) -> k
152.05/59.46	 app(l,nil()) -> l
152.05/59.46	 app(cons(x,l),k) -> cons(x,app(l,k))
152.05/59.46	 sum(cons(x,nil())) -> cons(x,nil())
152.05/59.46	 sum(cons(x,cons(y,l))) -> sum(cons(plus(x,y),l))
152.05/59.46	 sum(app(l,cons(x,cons(y,k)))) -> sum(app(l,sum(cons(x,cons(y,k)))))
152.05/59.46	 plus(0(),y) -> y
152.05/59.46	 plus(s(x),y) -> s(plus(x,y))
152.05/59.46	
152.05/59.46	Proof:
152.05/59.46	 Open
152.05/59.46	EOF