YES


Termination: (Ranking Functions Found)
------------
l2: < < 15 - nI6_0, 0 > >
l3: < < 15 - nI6_0, 15 - nI6_0 > >
l1: < < 15 - nI6_0, 15 - nI6_0 > >
l0: < < 15 - nI6_0, 0 > >