MAYBE
MAYBE
TRS:
 {
   sum(0()) -> 0(),
  sum(s(x)) -> +(sqr(s(x)), sum(x)),
  sum(s(x)) -> +(*(s(x), s(x)), sum(x)),
     sqr(x) -> *(x, x)
 }
 DUP: We consider a duplicating system.
  Trs:
   {
     sum(0()) -> 0(),
    sum(s(x)) -> +(sqr(s(x)), sum(x)),
    sum(s(x)) -> +(*(s(x), s(x)), sum(x)),
       sqr(x) -> *(x, x)
   }
  Fail