YES(?,O(n^2))
TRS:
 {      *(x, x) -> x,
  *(x, *(y, z)) -> *(*(x, y), z)}
 DUP: We consider a non-duplicating system.
  Trs:
   {      *(x, x) -> x,
    *(x, *(y, z)) -> *(*(x, y), z)}
  Matrix Interpretation:
   Interpretation class: triangular
       [X3]  [X1]    [1 0][X3]   [1 2][X1]   [2]
   [*]([X2], [X0]) = [0 1][X2] + [0 1][X0] + [2]
   
   
   Qed