YES
O(n)
TRS:
 {a(b(a(x))) -> b(a(x))}
 Natural interpretation:
  Strict:
   {a(b(a(x))) -> b(a(x))}
  Weak:
   {}
  Interpretation class: stronglylinear
  [a](X0) = + 1*X0 + 1
  [b](X0) = + 1*X0 + 0
  
  Qed