(VAR X XS N Y YS)
(STRATEGY CONTEXTSENSITIVE 
  (from 1)
  (cons 1)
  (s 1)
  (sel 1 2)
  (0)
  (minus 1 2)
  (quot 1 2)
  (zWquot 1 2)
  (nil)
)
(RULES 
from(X) -> cons(X,from(s(X)))
sel(0,cons(X,XS)) -> X
sel(s(N),cons(X,XS)) -> sel(N,XS)
minus(X,0) -> 0
minus(s(X),s(Y)) -> minus(X,Y)
quot(0,s(Y)) -> 0
quot(s(X),s(Y)) -> s(quot(minus(X,Y),s(Y)))
zWquot(XS,nil) -> nil
zWquot(nil,XS) -> nil
zWquot(cons(X,XS),cons(Y,YS)) -> cons(quot(X,Y),zWquot(XS,YS))
)