Termination w.r.t. Q of the following Term Rewriting System could not be shown:

Q restricted rewrite system:
The TRS R consists of the following rules:

a(b(a(b(x)))) → b(a(b(a(a(b(x))))))

Q is empty.


QTRS

Q restricted rewrite system:
The TRS R consists of the following rules:

a(b(a(b(x)))) → b(a(b(a(a(b(x))))))

Q is empty.