YES
O(n^4)
TRS:
 {g(x, a(), b()) -> g(b(), b(), a())}
 DUP: We consider a non-duplicating system.
  Trs:
   {g(x, a(), b()) -> g(b(), b(), a())}
  Matrix Interpretation:
   Interpretation class: triangular
         [0]
         [0]
   [a] = [0]
         [1]
   
         [0]
         [0]
   [b] = [1]
         [0]
   
       [X11]  [X7]  [X3]    [1 0 0 0][X11]   [1 0 0 0][X7]   [1 0 1 0][X3]   [0]
       [X10]  [X6]  [X2]    [0 0 0 0][X10]   [0 0 0 1][X6]   [0 0 1 0][X2]   [0]
   [g]([ X9], [X5], [X1]) = [0 0 0 0][X9] + [0 0 0 0][X5] + [0 0 0 0][X1] + [0]
       [ X8]  [X4]  [X0]    [0 0 0 0][X8]   [0 0 0 0][X4]   [0 0 0 0][X0]   [0]
   
   
   Qed